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Thread: new cam setup advise
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10-26-2014, 12:28 AM #1
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new cam setup advise
I have a AI cam 230/234 565/575 112lsa, comp 918 valve springs, comp r lifters.. the heads are stock casting 93 heads and are at the machine shop getting ported,probed, and polished, mounting hardware and replacing the 1.50 valves with 1.60s... i know its a pretty big cam but for what i have in it i couldnt not put it in.. but first question is does AI spec cams on a stock rocker or 1.6 rockers and 2nd will i have any piston to valve clearance issues??
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10-26-2014, 08:36 AM #2
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No you should be fine, I'm not sure if they spec with 1.5 or 1.6, should say on cam card. We have 1.6 on a LE cam with .592/592 lift 228/234 duration with le2 heads. Car is a fun street car
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1994 Firebird Formula 381 stroker - Carrying the torch! - 9.64 @ 139.4mph on a 88 jet
1994 Camaro Vert - SBE LE1 Summit 8802 Cam - The Cruiser
1993 Camaro Z28 - 355 TC78 Turbo T56 - part out? finish?
The wrench/driver for LTConvert's 94 Z28- Ellwein 383/LE Trickflows/ P600B / CPT Ultra Pro Race 4L60E/Holley Terminator EFI/little huff of spray
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10-26-2014, 09:29 PM #3
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My 2 cents with that cam... Build a forged 383 itll have better manners than a 355!!! Use the Lightest good parts you can find for a N/A combo & youll have a Big Shit eatin grin on your face
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10-26-2014, 09:38 PM #4
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most of the custom guys spec there cam's with 1.6 ratio rockers. You could shoot them an email and ask.
94' Z28 A4 black: turbo build in progress
94' Formula A4 red: 355, 11.5:1cr, LE 231/239 cam, comp promags, lpp's, Yank stall, 3:42's, Solomon tune
07' Impala A4: 180000 miles of stockness
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10-26-2014, 10:14 PM #5
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That cam would be small for a 383
LTX Hoarder
1994 Firebird Formula 381 stroker - Carrying the torch! - 9.64 @ 139.4mph on a 88 jet
1994 Camaro Vert - SBE LE1 Summit 8802 Cam - The Cruiser
1993 Camaro Z28 - 355 TC78 Turbo T56 - part out? finish?
The wrench/driver for LTConvert's 94 Z28- Ellwein 383/LE Trickflows/ P600B / CPT Ultra Pro Race 4L60E/Holley Terminator EFI/little huff of spray
10.16 @ 138mph. Shooting for 9.99 for Frank/Gail Cahall!
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10-29-2014, 12:27 AM #6
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Thanks guys for the reply .. i finally figured out the cams spec'd on 1.6 rockers, anyone wanna guestimate the power range of this cam? I have the rev limiter set for 6300 and what size injectors would be best to run with a pretty much h/c/i car
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10-29-2014, 12:41 AM #7
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36lbers will do.
Also, 1.6" valves in a stock exhaust seat is too big. The throat of a stock seat is the restriction, not the valve. You're better off with 1.56" valves because the larger ones will only shroud the chamber and stick out more.96 Z28 - ERE-383, AFRs, 9", Procharger D1, TermiX, etc.
95 Roadmaster - T56 swap, H/C, suspension (aka The Cammaster)
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10-29-2014, 06:43 AM #8
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Yup ^^
Originally Posted by TubbyFormy
[QUOTE=Catmaigne;413367]36lbers will do.
and Yup^^
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10-29-2014, 03:05 PM #9
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Ok thanks for the advice and yea my engine builder stopped me in my track when i was giving him the stuff he said he could puem in but fitment wouldnt be right for him to be comfortable and that it would prolly run better with the good fitting factory valves
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