92 305 TPI on a 85 350
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Joined: Jun 2004
Posts: 40
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From: New York
Car: 90 nissan 240sx
Engine: Blown LS7X
Transmission: TCI powerglide
Axle/Gears: backhalf w/ Profab 9 inch
92 305 TPI on a 85 350
Can i swap my 305 TPI setup onto a 85 350 without any fitment problems? The 350 currently has a carburator on it.
Last edited by Anoying Eric; Feb 8, 2005 at 08:57 AM.
Joined: Mar 2000
Posts: 43,187
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From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: L92/LQ4 (both w/4" stroke)
Transmission: 4L80E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
No.
The fitment problems will be:
1) Center two intake mount bolts on each side will be a different angle on the base than in the heads. It can be solved, but it is a "fitment problem".
2) The '92 will have a one-piece rear main seal and the '85 will be 2-piece. They use different flexplates (flywheel).
Non-fitment issues:
1. Knock sensor: Get a 350 sensor and module. The '85 may have the sensor, but most likely will not have the module.
2. Injectors & fuel pressure regulator: May need 22 lb injectors, and an adjustable FPR is a good idea, regardless.
3. PROM: Will need tuning for the displacement increase. Burn your own is probably the best idea.
The fitment problems will be:
1) Center two intake mount bolts on each side will be a different angle on the base than in the heads. It can be solved, but it is a "fitment problem".
2) The '92 will have a one-piece rear main seal and the '85 will be 2-piece. They use different flexplates (flywheel).
Non-fitment issues:
1. Knock sensor: Get a 350 sensor and module. The '85 may have the sensor, but most likely will not have the module.
2. Injectors & fuel pressure regulator: May need 22 lb injectors, and an adjustable FPR is a good idea, regardless.
3. PROM: Will need tuning for the displacement increase. Burn your own is probably the best idea.
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