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Search: Posts Made By: Mortorq
Showing results 1 to 50 of 254
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Forum: Tech / General Engine
Yesterday, 05:33 PM
Replies: 4
Views: 166
Posted By Mortorq

Re: Good engine parts combination to replace aL03?

Thanks for the reply DM & Skinny.
Yes, just a cruiser with maybe some spirited on ramp driving.
That compression calcumalator is a help too.
I think Dr Vizard would approve of the #7151 cam,...
Forum: Tech / General Engine
05-10-2024, 04:29 PM
Replies: 4
Views: 166
Posted By Mortorq

Good engine parts combination to replace aL03?

Hello all
What are your thoughts with the following engine combination?
1988 IROC vert presently equippedwith a T5, 3:08 posi, catless 3” Hooker Aerochamber exhaust with Hooker 2055 headers,...
Forum: Engine Swap
05-04-2024, 04:44 PM
Replies: 6
Views: 246
Posted By Mortorq

Re: More 305 to 350 questions.

Is the Holley Sniper as reliable as LS style EFI adapted to an sbc?
Forum: Tech / General Engine
10-14-2023, 06:38 PM
Replies: 3
Views: 255
Posted By Mortorq

Re: Question for Sofa #6211 Holley install

Sofa,
Thanks for the reply... Always wondered how the final iteration looked like underneath there with that lumpy 400 SBC of yours.
Can I ask, did you use a L69 dual snorkle air cleaner back then?
Forum: Tech / General Engine
10-14-2023, 01:21 PM
Replies: 3
Views: 255
Posted By Mortorq

Question for Sofa #6211 Holley install

Hello all, including Sofa, or others,
When you swapped the computer Quadrajet for the 800CFM #6211 mech secondary Holley after installing the lower-vacuum XR282HR cam and replaced the HEI in your...
Forum: Tech / General Engine
05-24-2023, 05:15 PM
Replies: 6
Views: 1,096
Posted By Mortorq

Re: 406 SBC starter troubles

Ask Sofakingdom. He might make a sticky for the manual trans 153 tooth flywheel 400 sbc combo.
Forum: Tech / General Engine
05-13-2023, 12:04 AM
Replies: 15
Views: 659
Posted By Mortorq

Re: Would you run this?

Land Air Associates in Arlington Heights on Arthur did some 059 heads for me.
Don’t know how his health is now though.
Retired airline engine mechanic before he opened his own shop.
Forum: Tech / General Engine
05-10-2023, 09:47 AM
Replies: 7
Views: 308
Posted By Mortorq

Re: Tuning a Pleistocene era 1981 ECM for a quicker advanced curve?

Vader & BadSS,
Thanks so much for the assist, this site has to be the biggest treasure trove of knowledgable guys outside of NASA lol.
This friend of the family, a non-mechanical 58 y/o...
Forum: Tech / General Engine
05-09-2023, 06:33 PM
Replies: 7
Views: 308
Posted By Mortorq

Re: Tuning a Pleistocene era 1981 ECM for a quicker advanced curve?

File this under, “Now why didn’t I think of using an L69 chip?”
Perfect idea.
Thanks again Sofa, I owe you one.
Forum: Tech / General Engine
05-09-2023, 05:57 PM
Replies: 7
Views: 308
Posted By Mortorq

Re: Tuning a Pleistocene era 1981 ECM for a quicker advanced curve?

Understand Sofa thank you. I wasn’t specific enough again. Wanted to bring the advance in earlier without altering the total amount of advance. If that makes sense.
Forum: Tech / General Engine
05-09-2023, 01:49 PM
Replies: 7
Views: 308
Posted By Mortorq

Tuning a Pleistocene era 1981 ECM for a quicker advanced curve?

Greetings all,

A friend of mine h1200 miles away down in scenic Austin has the factory one year only(near as I can tell)computer controlled Quadra jet L81 350 in his 1981 Corvette.



Seems...
Forum: Tech / General Engine
03-22-2023, 11:50 PM
Replies: 7
Views: 539
Posted By Mortorq

Re: Pump gas ok with 58CC #520 Vortec heads on a L31

THANK YOU everyone for the replies.
The carb will be a list #4776 600 mech sec Holley, AND I mispoke at the top, it will be a non-computer H.E.I. distributor.

2knight's 400 with 58cc heads!...
Forum: Tech / General Engine
03-22-2023, 04:10 PM
Replies: 7
Views: 539
Posted By Mortorq

Pump gas ok with 58CC #520 Vortec heads on a L31

I have a line on a lowish mile 5.7 L31 engine to swap in my ‘88 T5 TBI IROC.
It will be carb’d with the Chevy 12677151 hyd roller cam.

I have a fresh set of .500” lift prepped 58 cc Vortec...
Forum: Tech / General Engine
11-29-2022, 11:53 PM
Replies: 111
Views: 3,381
Posted By Mortorq

Re: Single pattern cam or dual pattern?

FBird-
Your above cam creation combo would be one stunning addition to a carb’d head-modded Vortec L31 swapped street third gen.
(Truly IMHO after reading Harold Brookshire, David Vizard, etc & of...
Forum: Tech / General Engine
11-29-2022, 09:15 PM
Replies: 111
Views: 3,381
Posted By Mortorq

Re: Single pattern cam or dual pattern?

I would gladly pay Richard Holdener on Tuesday to test out Orr’s entire #23 post today lol!
Fascinating engineering treatise for street rpm single vs double pattern.
Forum: Tech / General Engine
11-29-2022, 10:28 AM
Replies: 111
Views: 3,381
Posted By Mortorq

Re: Single pattern cam or dual pattern?

Fast-
Thats a lot of duration for a little 305!
Who custom ground that cam for you?
Forum: Tech / General Engine
11-29-2022, 08:21 AM
Replies: 111
Views: 3,381
Posted By Mortorq

Re: Single pattern cam or dual pattern?

Is that superior down low torque from the narrow 107LSA & short intake duration?
Amazing cam when tested on Holdener’s channel.
Forum: Tech / General Engine
08-06-2022, 02:33 PM
Replies: 226
Views: 8,832
Posted By Mortorq

Re: Cam shortage, this ok for stoplite to stoplite?

Thanks for the rocker arm info skinny.

I should get the half-inch drill and open up the push ride holes in the head a little, correct?

The lift could be bumped if I didn’t end up with the...
Forum: Tech / General Engine
08-06-2022, 06:19 AM
Replies: 226
Views: 8,832
Posted By Mortorq

Re: Cam shortage, this ok for stoplite to stoplite?

Fbird88- Thanks for that Elgin tip!
Forum: Tech / General Engine
08-05-2022, 11:18 PM
Replies: 226
Views: 8,832
Posted By Mortorq

Re: Cam shortage, this ok for stoplite to stoplite?

If I didn’t wait, & went with Fbird’s Melling 22221 or the GM 395 cam, I would like to get closer to .500” lift to truly take advantage of the little Vortec 520 heads better flow.
Then there’s...
Forum: Tech / General Engine
08-05-2022, 04:02 PM
Replies: 226
Views: 8,832
Posted By Mortorq

Re: Cam shortage, this ok for stoplite to stoplite?

Gentleman
Compression ratio? It’s a stock 1988 L03 shortblock, not rebuilt, negligible oil usage.
Stock rebuilt #520 305 Vortec 58cc? heads with reduced guide height, comp beehives & 587...
Forum: Tech / General Engine
08-01-2022, 10:15 AM
Replies: 226
Views: 8,832
Posted By Mortorq

Re: Cam shortage, this ok for stoplite to stoplite?

Fbird’88
Thanks for the input, certainly appreciate it, but holy cow.

Everything I’d read, heard, learned, was told, etc is that a little 9.0-1 305 will be a slug off idle with a cam as big as...
Forum: Tech / General Engine
07-27-2022, 11:57 AM
Replies: 226
Views: 8,832
Posted By Mortorq

Re: Cam shortage, this ok for stoplite to stoplite?

Skinny
So, possibly more analysis coming of the 395 cam’s output vs the calculated DCR & IVC?
Only thing missing is some real lift closer to .500” to use with the valve guide clearanced #520 heads.
Forum: Tech / General Engine
07-25-2022, 06:50 PM
Replies: 226
Views: 8,832
Posted By Mortorq

Re: Cam shortage, this ok for stoplite to stoplite?

Thanks Vorteciroc ,
Good idea about getting an existing cam reground.
SkinnyZ was able to help out and give me the lowdown with Mike Jones as far as getting my cam reground or, regrinding mine....
Forum: Tech / General Engine
07-25-2022, 03:54 PM
Replies: 226
Views: 8,832
Posted By Mortorq

Re: Cam shortage, this ok for stoplite to stoplite?

Dyno Dave,
My 520(059) heads must have been off a Silverado or something, because there was not any corrosion in the passages. I purchased the pair already off the engine.
VERY impressive helpful...
Forum: Tech / General Engine
07-19-2022, 11:57 PM
Replies: 226
Views: 8,832
Posted By Mortorq

Re: Cam shortage, this ok for stoplite to stoplite?

Gentleman, me again.

If I did go with the 395 cam, would like to use 1.6 self aligning, steel, elongated rockers to gain some lift to take advantage of the #520 heads capability.

Been looking,...
Forum: Tech / General Engine
07-19-2022, 03:30 PM
Replies: 6
Views: 8,791
Posted By Mortorq

Re: best intake for 355 vortec heads

Oops. Ignore the above
Forum: Tech / General Engine
07-19-2022, 02:28 PM
Replies: 6
Views: 8,791
Posted By Mortorq

Re: best intake for 355 vortec heads

Wait, hepp me unnerstan.
So this fella with The Green Machine in the link you posted was ok with the 395 cam in a L30 Vortec 305? It ran ok & Fast, you are ok with this combo?
Forum: Tech / General Engine
07-19-2022, 02:10 PM
Replies: 226
Views: 8,832
Posted By Mortorq

Re: Cam shortage, this ok for stoplite to stoplite?

Geez
Thanks again for your expertise & saving me from myself with the alternate choice 395 Ramjet cams real personality.
Better wait for October for all the back ordered aftermarket cams to...
Forum: Tech / General Engine
07-19-2022, 09:32 AM
Replies: 226
Views: 8,832
Posted By Mortorq

Re: Cam shortage, this ok for stoplite to stoplite?

Guys, you have covered a lot of ground here, thank you, sure is helpful.

Since in-stock choices would be kind of a compromise, would the still-available HT383 “395” cam be an improvement over the...
Forum: Tech / General Engine
07-18-2022, 12:27 PM
Replies: 226
Views: 8,832
Posted By Mortorq

Re: Cam shortage, this ok for stoplite to stoplite?

Skinny, False alarm, sorry.

You’re right. Howard’s guy misspoke.
108225-TWELVE!

No such thing as a 108225-10. Called back, also couldn’t find it on their site.
Back to the drawing...
Forum: Tech / General Engine
07-18-2022, 11:40 AM
Replies: 226
Views: 8,832
Posted By Mortorq

Re: Cam shortage, this ok for stoplite to stoplite?

Skinny,
Thanks for the Mike Jones email update.

What do you think of this? Actually available.

Howard’s # 108225-10
207/213, .300”/.310” lobes, 110 LSA, 106 ICL
.020 239
.200 125
Not...
Forum: Tech / General Engine
07-18-2022, 10:47 AM
Replies: 226
Views: 8,832
Posted By Mortorq

Re: Cam shortage, this ok for stoplite to stoplite?

Skinny,
Wow. Thanks for that Mike Jones info!
Forum: Tech / General Engine
07-18-2022, 10:06 AM
Replies: 226
Views: 8,832
Posted By Mortorq

Re: Cam shortage, this ok for stoplite to stoplite?

Skinny,
Seems like it would be best if I just wait until October when Comp’s or Lunati’s newer present day designs might be available, rather than compromise with older lazy lobes.
Forum: Tech / General Engine
07-17-2022, 10:25 PM
Replies: 226
Views: 8,832
Posted By Mortorq

Re: Cam shortage, this ok for stoplite to stoplite?

Skinny
Do you recall the old single pattern FT Crane 274 H06 218/.450”, 106 LSA?

Back at the beginning of this post, actually all I was trying to do was to duplicate WITH a hyd roller, EXCEPT...
Forum: Tech / General Engine
07-17-2022, 06:38 PM
Replies: 226
Views: 8,832
Posted By Mortorq

Re: Cam shortage, this ok for stoplite to stoplite?

Thanks for all your detailed insight guys. So appreciated.

If I read it correctly, looks like Mike Jones hyd roller cams require his proprietary lifters too.
Don’t really want to sink that...
Forum: Tech / General Engine
07-16-2022, 01:24 PM
Replies: 226
Views: 8,832
Posted By Mortorq

Re: Cam shortage, this ok for stoplite to stoplite?

Skinny & Fast,
Is it your considered opinions that the Elgin 1136 would be a good compromise for an off the shelf available roller cam replacement?

I’m presently using Hooker 2055s and a...
Forum: Tech / General Engine
07-15-2022, 11:39 PM
Replies: 226
Views: 8,832
Posted By Mortorq

Re: Cam shortage, this ok for stoplite to stoplite?

Skinny,
Stock L03 shortblock, the #520 heads have 58 CC chambers like the 187 swirlies that are being replaced.

Would like to keep using 87 fuel, but if not, oh well.

Was going to say it’s an...
Forum: Tech / General Engine
07-15-2022, 08:13 PM
Replies: 226
Views: 8,832
Posted By Mortorq

Re: Cam shortage, this ok for stoplite to stoplite?

No worries Dyno,
Appreciate all the info Fast, Skinny, Orr, Dyno.

Fast came up with a Comp Magnum 215/215 @.050”, 500/.500”, 110 LSA option for the little 305.

Would I possibly have a...
Forum: Tech / General Engine
07-14-2022, 10:49 PM
Replies: 226
Views: 8,832
Posted By Mortorq

Cam shortage, this ok for stoplite to stoplite?

Greetings SkinnyZ, Sofa, Fast355, et al,
Would like to replace the factory hyd roller in my '88 IROC T5 3:08 posi vert. The 305 shortblock is still great. Would like to stay small with the cam to...
Forum: Tech / General Engine
02-08-2022, 02:16 PM
Replies: 5
Views: 1,242
Posted By Mortorq

Re: 305 cam original vs aftermarket

What HYDRAULIC ROLLER cam do you think would match the specs of that hyd flat tappet 274H06 218’/218’ @ .050” single pattern 106 LSA cam for use in a carb’d 1988 factory 305 L03?

You know, do the...
Forum: TBI
12-01-2021, 09:12 PM
Replies: 8
Views: 549
Posted By Mortorq

Re: Non-tune LO3 to L31 minor mods

I would be one of the guys you might roll your eyes at.
I don’t know what ATJP , ANLU binary tunes $61 masks are yet.
Block learn modules or knock counts terms somewhat familiar with lol.
Very...
Forum: TBI
12-01-2021, 07:17 PM
Replies: 8
Views: 549
Posted By Mortorq

Re: Non-tune LO3 to L31 minor mods

Thanks Tuned Performance. Actually, I just had to replace the TBI fuel pump, it was only delivering 8 lbs to the TBI. How does one modify a atjp tune & what is it? Aldo didn’t know that a newer...
Forum: TBI
12-01-2021, 04:14 PM
Replies: 8
Views: 549
Posted By Mortorq

Re: Non-tune LO3 to L31 minor mods

Well, of course I wouldn’t INTENTIONALLY want to run lean.
I had read that a close to stock tune with a mild cam and a maxed out factory fuel pressure regulator(converted to adjustable from the...
Forum: TBI
12-01-2021, 12:35 PM
Replies: 8
Views: 549
Posted By Mortorq

Non-tune LO3 to L31 minor mods

Fast355 et al,Disclaimer-I would like to do the following mods WITHOUT a tune.
‘88 LO3 IROC convertible T5.

I know the following combination wouldn’t be completely optimal as far as gas mileage...
Forum: Tech / General Engine
09-05-2021, 06:59 AM
Replies: 8
Views: 716
Posted By Mortorq

Re: Old off-site post on 305 upgraded to 325hp

Fast-
“With ported 601s and a 218/218 @ 0.050, 106 LSA cam installed on a 102 ICL that old LE9 cranked out nearly 250 hp at the tires and 290 tq.”

Was that cam the old Crane FT 274H06?

If you...
Forum: Carburetors
07-19-2021, 09:58 AM
Replies: 6
Views: 361
Posted By Mortorq

Re: Mech Sec 800 on the street

Thank you Sofa & BadSS.
Wish I’d seen that chart in the mid 70’s.
I will be following Sofa’s Holley tuning sticky, of course INCLUDING tuning the pump shot.

Then,
(a) tune the carb to where...
Forum: Carburetors
07-17-2021, 01:28 PM
Replies: 6
Views: 361
Posted By Mortorq

Re: Mech Sec 800 on the street

Sofa,
Thank you for the reply. Without too much smoke blowing up your etc, I really appreciate your expertise here on this question.
I’d buy you your favorite adult beverage if I could! Kind of...
Forum: Carburetors
07-12-2021, 11:21 PM
Replies: 6
Views: 361
Posted By Mortorq

Mech Sec 800 on the street

This is more of a question for sofa, really.

He had, or still owns a 3:73 T56 400sbc with a Comp 288 hyd roller AND a #6211 800 CFM Holley mech sec spread bore carb.



Just wanted to...
Forum: TBI
05-22-2021, 09:48 PM
Replies: 5
Views: 448
Posted By Mortorq

Re: Best replacement fuel pump, sock, gas gauge potentiometer source & manufacturer?

Schurkey,
Point taken. Butt, if I’m to get close enough to the pump to put my dc amprobe on the pump leads on the top of the tank by dropping it, knowing it’s 33 yrs old, I’ll just put everything...
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