dspencer24

iTrader: (3)

Im in the process of rebuilding a 1992 350, and I will be using the xfi 268 cam. What are the pros or cons to using these http://www.jegs.com/i/GM+Performance...99225/10002/-1? Comp cams lifters are the other option but are more expensive. I have afr 180's and siamesed and ported tpi so I plan on taking it to atleast 5500 to 6000

89fbirdformula

yes those lifters will work just fine.

any other option will be roughly the same aside from the price, id just get the ls lifters and call it a day.

the hot ticket used to be using the ls7 lifters, but for whatever reason the price skyrocketed....some say/ive read that the ones you posted are the same thing, but im not sure.

dspencer24

iTrader: (3)

and if i use these lifters can i reuse my lifter guides and my spider? Or is it better to replace these as well

89fbirdformula

get new, might as well..

jegs and summit both have a roller "rebuild kit" for like 100

comes with all 16 link bars,spider retainer and the hardware, i think the summit kit even includes cam lobe/pushrod/rocker lube.

dspencer24

iTrader: (3)

look man we are posting on the same thread again lol, but yeah i have been trying to find out out which ones will work and be relaible i will not be using speed pro, i have read to many horror stories. intersted where i can find the ls7 ones and what if any are the differences between the ls style lifters not sure if its the valving or what

GTA Sammy

iTrader: (1)

http://www.summitracing.com/parts/NAL-12499225/

We talked about LS7 Lifters here; https://www.thirdgen.org/forums/alte...r-hsr-xfi.html

dspencer24

iTrader: (3)

thanks for the help, is there anything extra i need to know about these when i install them or is it as simple as stock

GTA Sammy

iTrader: (1)

Should be just like stock....

1989GTATransAm

iTrader: (3)

Those lifters are now the stock replacement. Lucky for us they are also one of the best lifters out there and at a very affordable price. They are good to around 7000rpm. I have them in my new motor and went up to 6800rpm without a problem.

dspencer24

iTrader: (3)

6800 damn I want your motor, i think 6k will be the max I take it to i prolly wont even take it that high i just want reliability.

GTA Sammy

iTrader: (1)

RPM's are addicting though....
I was pretty hesitant too but zinging upto 6500 is exhilarating!!! (I was waiting for things to blow up because 5000 was as high as a TPI would allow me to go!!!)
You'll see....

dspencer24

iTrader: (3)

I bet my uncle has this ls1 vette putting down 400+ to the wheels last time it was dyno'd and it pulls to 7k I think when I was in it it felt like the seat was pulling me back.. lol i cant wait till my 350 is completly built so i can putt around town.

dspencer24

iTrader: (3)

yeah if wasnt apart of the great state of cali i wouldnt have this tpi unit on it and I would have gotten the afr 195 instead of the 180's

1989GTATransAm

iTrader: (3)

Don't waste your money on any other lifter. The GM part listed above is very very good. Only if you need something like the Morrels($$$$) for a race motor would I consider something different.

By the way I will be running TPI and AFR 195 heads. I expect to be well past 400rwhp with the new motor and deep 11's at the track.

dspencer24

iTrader: (3)

holy cow 400 to the wheels? , you have a highly modified tpi unit right"? when you had the the 268 what heads were u running

1989GTATransAm

iTrader: (3)

Dart Pro One 200 earlier style. Still on the motor currently in the car.

89fbirdformula

no offense 1989gtatransam i highly doubt you will see 400rwhp...

330/350..maybe.

1989GTATransAm

iTrader: (3)

"no offense 1989gtatransam i highly doubt you will see 400rwhp..."


Why's that?

89fbirdformula

TPI doesnt flow enough, or allow to rev high enough to make that with a milder combo..

what are you going to be running for intake?

also, im asuming you sre staying TPI, because of cali **** laws.

Orr89RocZ

iTrader: (20)

You really have no idea what he's actually running It will do 400whp or be very very close.

Its not your ordinary TPI


I am using LS7 lifters on my turbo motor and have used the same ones on my 383 HSR motor. I turned 6800-7000 on occassion as well with heavy spring pressures and no problems that I can tell. Quality lifter for 120 bucks.

1989GTATransAm

iTrader: (3)

You are correct in that I'm staying with the TPI because of the California smog laws. However what you don't realize is I have one of those hi-flowing TPI intake systems including a First intake manifold on the base that flows well North of 300cfm.

My current 355 motor has made 380rwhp with an unlocked Yank SS3600 torque converter on the chasis dyno. My new 369CI motor made 535HP on an engine dyno with a not so good flowing Victor Jr. The Victor Jr flowed from 250 to 280 cfm depending on the ports. That motor will be going into the car pretty soon.

I will turn on my signature.

89fbirdformula

NOW it makes sense...haha

can you use any stock "tpi" stuff with the first? i never really looked into the first stuff..

89fbirdformula

his latest post confirms what i had expected...

and i stand corrected lol..

honestly, i can see over 400, wouldnt be surprised with 430ish.

Orr89RocZ

iTrader: (20)

Yep, just an incredible modded 'TPI' even tho its no longer a long tube runner design
It should have alot of people scratching their heads, looking for that hidden nitrous shot....but they wont find it haha.

If you wish to pull alot of rpms, there are the caddy race lifters, good to 8500 I think. 250-300 bucks, still a great bargin. Think they still make them.

1989GTATransAm

iTrader: (3)

"can you use any stock "tpi" stuff with the first"

No. I had to modify a set of SLP runners so that they would bolt up to the First. Then of course you can use the factory plenum at that point. By the way with the current motor I'm shifting at 6500rpm and with the new motor I expect to shift in the 6800 to 7000rpm range depending dyno graph. Using the LS-7 factory lifters.

89fbirdformula

Nice, he got any pics of his setup?


ive been running the ls lifters in my motor for a long time, no issues.

1989GTATransAm

iTrader: (3)

My new motor thread.

https://www.thirdgen.org/forums/tpi/...lts-added.html

Thead showing how I modified the TPI using the First.

https://www.thirdgen.org/forums/tpi/...ifold-slp.html