docpete
Senior Member
Posts: 413
Loc: Illinois
Reg: 12-20-04
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01-12-09 02:18 PM - Post#1605330
Anyone know where I can find the specs for the 454 SS engine for 1990? I would like to know comp. ratio, cam duration/lift, head specs (valve size, chamber size) etc??
Thanks.
Pete
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ww454ss
Forum Newbie
Posts: 50
Reg: 01-01-09
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01-12-09 03:29 PM - Post#1605377
In response to docpete
www.454ss.com Should have some info. Its a mark IV. The compression ratio is I think a low 7:1. like 7.2:1. I have a 454ss and the heads suck. The bottom end is great for boost because of the low compression ratio. I am not sure if this is true but, on other forums I have heard of guys making 600-800 rwhp on the stock bottom end with twin turbos running 20+ lbs of boost. Of course I dont think those guys are worried about longevity. I know alot of us ss guys are running superchargers and running 12's and 13's on around 7lbs of boost. My 454ss makes great power and just has a set of headers. The motor is all about torque.
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FINMAN
Frequent Contributor
Posts: 1302
Loc: Burlington , Mass
Reg: 03-01-05
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01-12-09 06:17 PM - Post#1605479
In response to ww454ss
I dont remeber what specs this guy has but what an awesome truck.
Link
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ww454ss
Forum Newbie
Posts: 50
Reg: 01-01-09
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01-13-09 03:21 PM - Post#1606098
In response to FINMAN
Yah I love my 454ss. Its very impressive for a 19 year old truck. Mine was a little beat up and mal-nurished but it still is a beast. The first day I got it I blew the doors off a 1996 z28 and a 1968 mustang. It will chirp the tires from 2nd to 3rd. The torque is awesome.
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