Hi All,
I put a engine out of a 91 TPI 305 into my 88 Camaro that had a 305 TBI. I used the exhaust manifolds off of the 91 and the 88 y pipe, converter, muffler, etc. Are the flange size different between the 88TBI RS and a 91 Z28 TPI? I cant get rid of the exhaust leak were the Y pipes bolt to the exh. manifolds??? Anybody else run into this or hear of anything like this before?
Thanks!
Chris

 

Try an exhaust dount.

"I like Dounts" Homer Simpson

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http://www.geocities.com/fiream/RobsCarArtPa.html?994187591828

 

yes. But don't feel bad The z28s have bigger exaust all around that's why you have a leak. They weren't meant to go together. Can you put the ole Z28 exaust on your car? If you find the part of the Z28 y pipe to connect to your TBI Y pipe a muffler shop should be able to fix it. Better to look for the whole y pipe. You're really choking that 305 TPI with the TBI exaust. It already chokes the 305 TBI so the HP comes in well below the 305 TPI

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-Tas
'89 Formula WS-6

305, TBI, 700R4, P.A.W. 14x3 open element with K&N, Milodon 160* thermo, functional Formula hood, cross-flow Flowmaster, '99z28 rear pipes and tips, Hooker 1-5/8" 50 state legal headers, Dynomax 3" I pipe (PN 44063 and 43248)
Super GRK_Taz World
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Got Beach?

 

well, you could do what i do..use this little probelm as a perfect excuse to get some nice new headers.

but if you arent as impulsive as i am look for a y-pipe that will fit.

-Brian

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1991 Camaro RS - ultra blue metallic, t-tops
GMPP 350 HO crate engine - 454 TBI, MSD ignition, SLP exhaust, everything is new
700R4 - 2,400 stall converter, vette servo, shift kit
z28boy.cz28.com
Central New York F-Body Association
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1998 Pontiac Grand Prix GT</A> - 2 door, black

 

Chris, If you didn't live so far away, you could get mine off my 91. But such is life, and I can't drive to KY.



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Joshua Johnston
1991 Z-28


350, T-5, K&N, Ported Vortec heads, Edelbrock RPM, Holley 750 D.P., HEI, 11.07:1 CR, Comp Cams Roller-.510"/.520"-282*/288* dur., Shorty Headers, Dual 2.5 Exhaust,Dynomax Bullet Mufflers, T&R Motorsports custom air intake