Do i even have an option? tpi on 406 sbc
11-09-2010, 09:27 AM
#1
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Car: 89GTA, 62' GSXR1000-SS
Engine: 406-HSR
Transmission: Nocturnal
Do i even have an option? tpi on 406 sbc
ok, i have a 70s 400 sbc block, with procomp 210 cc aluminum heads. a very budgeted build, and i cant afford the stealth ram right now..
My question is.. is there any way i can make the factory tpi work, because my intake ports are visible with the tpi base on.. or does anyone make a base intake to fit these heads? will post pics if your not following me
My question is.. is there any way i can make the factory tpi work, because my intake ports are visible with the tpi base on.. or does anyone make a base intake to fit these heads? will post pics if your not following me
11-09-2010, 09:32 AM
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Car: 88 IROCZ 350
Engine: 355 cu TPI
Transmission: 4L60 w/ 3200 stall
Axle/Gears: 9 bolt W/370 gear
Re: Do i even have an option? tpi on 406 sbc
Yes,the Edelbrock base plate has larger runners and it has two angles machine on the two inner bolt to work with early and late model heads. I have a friend that ran low 12's with a 383 and the same TPI set up.
11-09-2010, 10:00 AM
#3
Re: Do i even have an option? tpi on 406 sbc
I replied to the other thread and see this is what I was concerned about. 1206 port on a 1204-ish port base. I believe aftermarket bases can be ported to 1205 but to really get a tall port you have to cut and weld the base up. Need to raise the port roof up and move injector bungs up higher.
LOTS of work but these mods help get manifold flow up over 275cfm to better suit most 195-210cc heads.
LOTS of work but these mods help get manifold flow up over 275cfm to better suit most 195-210cc heads.
11-09-2010, 05:48 PM
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Car: 82 Z28
Engine: 383 SP EFI/ 4150 TB
Transmission: T400
Axle/Gears: QP 9" 3.73
Re: Do i even have an option? tpi on 406 sbc
If Vortec style heads , can get Vortec TPI base but is best part of the price of a HSR
Reg intake on Vortec heads
11-09-2010, 06:14 PM
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Car: 82 Z28
Engine: 383 SP EFI/ 4150 TB
Transmission: T400
Axle/Gears: QP 9" 3.73
Re: Do i even have an option? tpi on 406 sbc
Just done some research.
PC sites states
"Heads are drilled for both the earlier style intake bolt pattern (pre '87) and the newer Vortec style "
Makes no mention of port style/ size / shape?
BUT Vortec port is completely different shape to reg port so as Orr89RocZ states you would need a raised runner aftermarket intake
Given the port shape, Vortec TPI base would be best choice allowing you to keep TPI
http://www.summitracing.com/parts/EDL-3817/
But at $470 for base only
Vortec HSR is not much more for superior intake
http://www.summitracing.com/parts/WND-7542/
http://www.summitracing.com/parts/HLY-534-192/
PC sites states
"Heads are drilled for both the earlier style intake bolt pattern (pre '87) and the newer Vortec style "
Makes no mention of port style/ size / shape?
BUT Vortec port is completely different shape to reg port so as Orr89RocZ states you would need a raised runner aftermarket intake
Given the port shape, Vortec TPI base would be best choice allowing you to keep TPI
http://www.summitracing.com/parts/EDL-3817/
But at $470 for base only
Vortec HSR is not much more for superior intake
http://www.summitracing.com/parts/WND-7542/
http://www.summitracing.com/parts/HLY-534-192/
11-11-2010, 03:49 PM
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Car: 89GTA, 62' GSXR1000-SS
Engine: 406-HSR
Transmission: Nocturnal
Re: Do i even have an option? tpi on 406 sbc
ill try again.. but its pretty much the picture that vette oz posted
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