manifold question - Pirate4x4.Com : 4x4 and Off-Road Forum

jonsroom · 09-15-2005, 10:42 PM

will a 89 tbi 350 mainfold fit on a 78 stock 350 engine?

Krazy Krakker · 09-15-2005, 11:34 PM

Yes it will.

k5krushert1 · 09-16-2005, 12:39 AM

wait i thought intakes changed patterns in 87? tell me if im wrong if thats the case it wont work

Black Dog · 09-16-2005, 04:22 AM

The center two bolts on each side of the intake go in straight down on the TBI manifold instead of on an angle like the older manifolds. The TBI intake can be modified to fit, although I have never done it personally.

lumpdog · 09-16-2005, 07:04 AM

If you are talking about exhaust manifolds, then yes.

Intake manifold will fit with minor grinding. The center two holes on each side need to be ground on top so they are parallel with the gasket mount surface. Then custom grind a fender washer to fit the bolt hole areas, and use four header bolts in there (because they usually have a 3/8" head).

Hopefully that makes sense.

09-15-2005, 10:42 PM	#1 (permalink)
jonsroom Registered User Join Date: Jun 2005 Member # 48409 Posts: 186	manifold question will a 89 tbi 350 mainfold fit on a 78 stock 350 engine?

09-15-2005, 11:34 PM	#2 (permalink)
Krazy Krakker Registered User Join Date: Aug 2005 Member # 52488 Location: The USA of course! Posts: 265	Yes it will. __________________ 87 YJ, 4:56s 1tons, 383/350, 205 T-case. "If you don't want it broke it, DON'T Let me drive it"!!!

09-16-2005, 04:22 AM	#4 (permalink)
Black Dog Registered User Join Date: Apr 2001 Member # 4140 Location: is everything Posts: 1,010	The center two bolts on each side of the intake go in straight down on the TBI manifold instead of on an angle like the older manifolds. The TBI intake can be modified to fit, although I have never done it personally. __________________ Tim There is no accounting for taste 1936, 1937, 1943, 1950, 1952, 1954, 1955, 1997, 1998, 2002, [B][COLOR="Red"]2008[/COLOR][/B].

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09-16-2005, 12:39 AM	#3 (permalink)
k5krushert1 Registered User Join Date: Mar 2005 Member # 44208 Location: Nor-Cal Posts: 213	wait i thought intakes changed patterns in 87? tell me if im wrong if thats the case it wont work

09-16-2005, 07:04 AM	#5 (permalink)
lumpdog Rock God Join Date: Mar 2005 Member # 44659 Location: Mtn Home, Idaho Posts: 1,237	If you are talking about exhaust manifolds, then yes. Intake manifold will fit with minor grinding. The center two holes on each side need to be ground on top so they are parallel with the gasket mount surface. Then custom grind a fender washer to fit the bolt hole areas, and use four header bolts in there (because they usually have a 3/8" head). Hopefully that makes sense.