1990 113 vette heads
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Car: '86 TRANS-AM WS6
Engine: 1989 355 TPI L98
Transmission: TH700R-4
Axle/Gears: BorgWarner 9 bolt/ 3.27
1990 113 vette heads
I just bought a pair of aluminum 1990 vette heads casting 113..my ? is whats the easiest and more cost effective way of making them fit on my 89 B2L 350 tpi trans am.
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Car: 1989-92 FORMULA350 305 92 Hawkclone
Engine: 4++,350 & 305 CIs
Transmission: 700R4 4800 vig 18th700R4 t56 ZF6 T5
Axle/Gears: 3.70 9"ford alum chunk,dana44,9bolt
Re: 1990 113 vette heads
You just have to elongate the center 2 holes on the stock lower intake.
Bolt on and enjoy the weight savings.
Bolt on and enjoy the weight savings.
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Car: '86 TRANS-AM WS6
Engine: 1989 355 TPI L98
Transmission: TH700R-4
Axle/Gears: BorgWarner 9 bolt/ 3.27
Re: 1990 113 vette heads
By elongate you mean get them bigger bolts or am I wrong
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Car: '86 TRANS-AM WS6
Engine: 1989 355 TPI L98
Transmission: TH700R-4
Axle/Gears: BorgWarner 9 bolt/ 3.27
Re: 1990 113 vette heads
Thanks for putting it in simple terms and the pic I dont trust my self doing that to my intake..now that would have to be done on both sides
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Car: '86 TRANS-AM WS6
Engine: 1989 355 TPI L98
Transmission: TH700R-4
Axle/Gears: BorgWarner 9 bolt/ 3.27
Re: 1990 113 vette heads
Will try it out and see how it goes
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Car: '86 TRANS-AM WS6
Engine: 1989 355 TPI L98
Transmission: TH700R-4
Axle/Gears: BorgWarner 9 bolt/ 3.27
Re: 1990 113 vette heads
Can anybody make the center bolts bigger for me as described on post #6 I don't have the time to do it myself right now
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Re: 1990 113 vette heads
There's more to it than just slotting the center 4 holes. The Corvette heads do not have the central EGR passage in them like the stock iron f-body heads do. You'll need to hook up the external EGR setup like the Corvettes do, which means using either a stock Corvette TPI intake, or getting an aftermarket Edelbrock TPI intake manifold. The Edelbrock manifold also has the correct bolt holes for the center bolts. You'll also need to modify your headers for the external EGR setup. I'm not sure if stock exhaust manifolds will work. I know the Corvette ones will not fit as they're center dump.
Also, those heads are missing one bolt hole for the f-body serpentine accessory setup, so you'll need to drill and tap a hole so you can bolt the accessories on.
https://www.thirdgen.org/forums/atta...s-dcp_0163.jpg
https://www.thirdgen.org/forums/atta...s-dcp_0162.jpg
Those pics are how I did it when I used Corvette heads back in 2001.
Also, those heads are missing one bolt hole for the f-body serpentine accessory setup, so you'll need to drill and tap a hole so you can bolt the accessories on.
https://www.thirdgen.org/forums/atta...s-dcp_0163.jpg
https://www.thirdgen.org/forums/atta...s-dcp_0162.jpg
Those pics are how I did it when I used Corvette heads back in 2001.
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Car: 09 GSXR/88 iroc/91 RS B4C
Engine: 600cc/l5.7/5.7
Transmission: 6 speed/TH 350/auto
Axle/Gears: 45tooth rear?/3.23/3.42
Re: 1990 113 vette heads
also need new spark plugs
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Car: '86 TRANS-AM WS6
Engine: 1989 355 TPI L98
Transmission: TH700R-4
Axle/Gears: BorgWarner 9 bolt/ 3.27
Re: 1990 113 vette heads
There's more to it than just slotting the center 4 holes. The Corvette heads do not have the central EGR passage in them like the stock iron f-body heads do. You'll need to hook up the external EGR setup like the Corvettes do, which means using either a stock Corvette TPI intake, or getting an aftermarket Edelbrock TPI intake manifold. The Edelbrock manifold also has the correct bolt holes for the center bolts. You'll also need to modify your headers for the external EGR setup. I'm not sure if stock exhaust manifolds will work. I know the Corvette ones will not fit as they're center dump.
Also, those heads are missing one bolt hole for the f-body serpentine accessory setup, so you'll need to drill and tap a hole so you can bolt the accessories on.
https://www.thirdgen.org/forums/atta...s-dcp_0163.jpg
https://www.thirdgen.org/forums/atta...s-dcp_0162.jpg
Those pics are how I did it when I used Corvette heads back in 2001.
Also, those heads are missing one bolt hole for the f-body serpentine accessory setup, so you'll need to drill and tap a hole so you can bolt the accessories on.
https://www.thirdgen.org/forums/atta...s-dcp_0163.jpg
https://www.thirdgen.org/forums/atta...s-dcp_0162.jpg
Those pics are how I did it when I used Corvette heads back in 2001.
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Car: 09 GSXR/88 iroc/91 RS B4C
Engine: 600cc/l5.7/5.7
Transmission: 6 speed/TH 350/auto
Axle/Gears: 45tooth rear?/3.23/3.42
Re: 1990 113 vette heads
if i remember correctly it has to do with the actual thread, on the spark pug itself.
check out autozone,
http://www.autozone.com/autozone/par...mString=search
i would also think we would need(better*) spark plugs to accommodate the advance timing in the BIN with aluminum heads. this im yet to research as to which plug to get.
check out autozone,
http://www.autozone.com/autozone/par...mString=search
i would also think we would need(better*) spark plugs to accommodate the advance timing in the BIN with aluminum heads. this im yet to research as to which plug to get.
#18
Re: 1990 113 vette heads
you egr wont work with 113 heads. you better off getting a 88-91 vette tpi lower base manifold and run a tube from your exhaust manifold then waste time elongating holes. Then its still smog legal. Others are right about plugs vette uses long reach plugs.
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Car: '86 TRANS-AM WS6
Engine: 1989 355 TPI L98
Transmission: TH700R-4
Axle/Gears: BorgWarner 9 bolt/ 3.27
Re: 1990 113 vette heads
Yeah looks like I'm going to have to do what you did in your pics how did you manage to do it or is there a kit for that?
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Car: 82 Z28
Engine: 383 SP EFI/ 4150 TB
Transmission: T400
Axle/Gears: QP 9" 3.73
Re: 1990 113 vette heads
Is a GM part for a 86 - 91 TPI Vette but I don't have a GM part #
Was available as a kit from SDPC
http://www.gmhightechperformance.com.../photo_13.html
https://www.thirdgen.org/forums/atta...x.egr-tube.jpg
Was available as a kit from SDPC
http://www.gmhightechperformance.com.../photo_13.html
https://www.thirdgen.org/forums/atta...x.egr-tube.jpg
#22
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Re: 1990 113 vette heads
Dyno Don added the tube on the #8 primary and we mocked it up to fit the EGR port on the intake manifold.
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Car: 1988 Flame Red Trans am GTA
Engine: Forged 355 4 Bolt, FIRST TPI
Transmission: 700r4
Axle/Gears: ls1 torsen 3.42 gear
Re: 1990 113 vette heads
also arent the heads d-port style.... meaning you need special headers for them to fit...i could be wrong..
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Car: '86 TRANS-AM WS6
Engine: 1989 355 TPI L98
Transmission: TH700R-4
Axle/Gears: BorgWarner 9 bolt/ 3.27
Re: 1990 113 vette heads
Is a GM part for a 86 - 91 TPI Vette but I don't have a GM part #
Was available as a kit from SDPC
http://www.gmhightechperformance.com.../photo_13.html
https://www.thirdgen.org/forums/atta...x.egr-tube.jpg
Was available as a kit from SDPC
http://www.gmhightechperformance.com.../photo_13.html
https://www.thirdgen.org/forums/atta...x.egr-tube.jpg
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Car: '86 TRANS-AM WS6
Engine: 1989 355 TPI L98
Transmission: TH700R-4
Axle/Gears: BorgWarner 9 bolt/ 3.27
Re: 1990 113 vette heads
We just went to the junkyard and picked up a V6 EGR pipe and modified it to fit. The V6 pipes are extra long with room to flex. Look around at any GM V6, not just f-bodies.
Dyno Don added the tube on the #8 primary and we mocked it up to fit the EGR port on the intake manifold.
Dyno Don added the tube on the #8 primary and we mocked it up to fit the EGR port on the intake manifold.
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Car: '86 TRANS-AM WS6
Engine: 1989 355 TPI L98
Transmission: TH700R-4
Axle/Gears: BorgWarner 9 bolt/ 3.27
Re: 1990 113 vette heads
How long should the bolt hole be made on the coevettu heads
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Car: '86 TRANS-AM WS6
Engine: 1989 355 TPI L98
Transmission: TH700R-4
Axle/Gears: BorgWarner 9 bolt/ 3.27
Re: 1990 113 vette heads
so is it safe to make the hole as deep as the bolt i will have a local machine shop d o it for me
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Re: 1990 113 vette heads
IIRC that is the location of the torx head stud. You will need to mark the hole location if your going to have someone else drill and tap the hole. You can set the head on your engine and bolt the serpentine bracket to the block and other cylinder head hole and use a centering punch to mark the hole location.
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Car: '86 TRANS-AM WS6
Engine: 1989 355 TPI L98
Transmission: TH700R-4
Axle/Gears: BorgWarner 9 bolt/ 3.27
Re: 1990 113 vette heads
Would an actual corvette egr pipe that goes into the no.8 cylinder exhaust manifold work if i get the pipe itself i know i still would need some modification to make it work. I found a guy near me that parts out corvettes and if it can work i can purchase it
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Car: '86 TRANS-AM WS6
Engine: 1989 355 TPI L98
Transmission: TH700R-4
Axle/Gears: BorgWarner 9 bolt/ 3.27
Re: 1990 113 vette heads
Hey i know the heads are aluminum and the oem were cast iron. The back of the wiring harness has for both side of the heads rear ground wires how do you connect them to make them ground same as oem or find a ground source
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