ok i really want to put one in my iroc sometime in the near future. but i always try to plan ahead and i was looking in my catalogs of car parts and i was wondering where i would get anintake for it also i think the 86 and up blocks have a different bolt pattern. and if you did do this where did you get your intake.

 

OK I DONT HAVE A 400.. BUT IT IS A SMALL BLOCK AND CHEVY DIDNT CHANGE MUCH. .. IF I WERE YOU I WOULD CALL TPIS INDUSTRIES OR GO TO TPIS.COM THEY ARE PRETTY GOOD ABOUT THAT KIND OF STUFF AND IT IS ALL FUEL INJECTION.. BUT WRITE BACK IF YOU HAVE ANY QUESTIONS

 

It wasn't the blocks that had a different bolt pattern, it was the center two bolts on each side of the intake to the head. Choose your heads based on whether you're going with an '86-older intake or '87-newer. Both intakes and heads are available with either pattern.

------------------
82 Berlinetta, orig V-6 car, now w/86 LG4/TH700R. 2.73 unlimited slip. Cat-back from '91 GTA, Accel HEI SuperCoil. AMSOIL syn lubes bumper-to-bumper. Daily driver, work-in-progress (LB9 w/ZZ3 cam, TBD heads, exhaust, paint, etc.).
57 Bel Air, my 1st car. 0.030 over 396, Weiand Action+, Edelbrock 1901 Q-Jet, Jacobs Omnipack, 1-3/4" headers, TH400 w/TCI Sat Night Special conv & shift kit, 3.08 10-bolt, AMSOIL syn lubes bumper-to-bumper. Best 15.1 @ 5800' Bandimere. Daily driver while Camaro was being put together.

 

some one here had a 400 tpi and said it was fast as he!! but, ran out of breath at 5000. but, I bet with the right heads and some intake polishing perhaps even a bigger intake and some slp runners it would go well above 5000.