350 to 454
Joined: Jul 2003
Posts: 10,521
Likes: 204
From: NYC / Jersey
Car: 1990 Trans Am GTA
Engine: Turbo 305 w/MS2
Transmission: 700R4
That's What I Have....
Hey Bro....
I installed a 454 into my 86 IROC, and to be quite honest with you, other than upgrading the drivetrain (for the increased torque), it's really a rather simple swap....
Of course the stock ECM and it's sensors have no more say in how it runs, the only 'real' concern's are cooling, and exhaust (this is if you don't beat on it, or else you DESTROY the stock transmission)!
Hooker Headers Part# HOK-2226 (they also make the necessary Y-Pipe, but I don't recall the Part#)
Go with a nice aftermarket radiator, I run with a Griffin.
Another good idea (for added clearance), lose you're A/C (if equipped), and swap you're A/C blower casing for a non-AC blower casing (there MUCH smaller, andprovided the necessary room for torquing down the head bolts). If you're installing the motor with the heads installed, the replacement blower cover also helps with the installation of the headers...
BTW... they make small blocks now displacing 454 cubes, just a thought!
I installed a 454 into my 86 IROC, and to be quite honest with you, other than upgrading the drivetrain (for the increased torque), it's really a rather simple swap....
Of course the stock ECM and it's sensors have no more say in how it runs, the only 'real' concern's are cooling, and exhaust (this is if you don't beat on it, or else you DESTROY the stock transmission)!
Hooker Headers Part# HOK-2226 (they also make the necessary Y-Pipe, but I don't recall the Part#)
Go with a nice aftermarket radiator, I run with a Griffin.
Another good idea (for added clearance), lose you're A/C (if equipped), and swap you're A/C blower casing for a non-AC blower casing (there MUCH smaller, andprovided the necessary room for torquing down the head bolts). If you're installing the motor with the heads installed, the replacement blower cover also helps with the installation of the headers...
BTW... they make small blocks now displacing 454 cubes, just a thought!
Senior Member
Joined: Jul 1999
Posts: 931
Likes: 0
From: Mpls, MN USA
Car: 88 Camaro
Engine: 427 BBC
Transmission: T400
Joined: Jul 2003
Posts: 10,521
Likes: 204
From: NYC / Jersey
Car: 1990 Trans Am GTA
Engine: Turbo 305 w/MS2
Transmission: 700R4
7.76 @ 94 (1/8 mile) 10/01
12.18 @ 113 (1/4 mile) 10/99
Dude.... you're only running low 12's with that kind of torque????
Are you running on stock tires? You should EASILY be in mid 11's.....
12.18 @ 113 (1/4 mile) 10/99
Dude.... you're only running low 12's with that kind of torque????
Are you running on stock tires? You should EASILY be in mid 11's.....
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