I think I overcammed
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Member
Joined: Mar 2002
Posts: 288
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From: Sharon, CT
Car: 87 Firebird Formula
Engine: 355
Transmission: T5
I think I overcammed
I haven't put the engine together yet but its a 350 bored .030 over with flat top pistons, performer intake, edelbrock 750 carb, and ported/polished lg4 heads. The cam I got is 234*duration and .488 lift. Is this too much cam with 3.73 gears and a 5 speed? I just wanna know before I put it together then have to tear it back apart to do a cam swap.
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Joined: Oct 2002
Posts: 9,067
Likes: 1
From: Saskatoon, SK, Canada
Car: '83 Z28, '07 Charger SRT8
Engine: 454ci, 6.1 Hemi
Transmission: TH350, A5
Axle/Gears: 2.73 posi, 3.06 posi
I'm no expert on cams, but i know a big cam like that will need fairly short gears, so 3.73s should be fine.
Supreme Member
Joined: Jul 1999
Posts: 1,386
Likes: 1
From: Tucson,AZ,USA
Car: Junk
Engine: Junk with nitrous
Transmission: Junk with gears
That cam sounds just right. I had a 284 comp in my firebird before the motor blew with 244 duration at .050 and .520 lift. Ran excellent, made enough torque to blow the tires off in any gear and idled good enough to pass emissions. Go figure
Thread Starter
Member
Joined: Mar 2002
Posts: 288
Likes: 0
From: Sharon, CT
Car: 87 Firebird Formula
Engine: 355
Transmission: T5
Well thats a relief. I didn't want to have to send another order back to summit. I already had to send back the pushrods, I got the part number messed up and got some for some kind of chrystler motor
I'll finally get to start building this damn thing!!!
I'll finally get to start building this damn thing!!!
Senior Member

Joined: Mar 2001
Posts: 841
Likes: 3
From: Silverhill,Al
Car: 92 Camaro RS
Engine: 305 TBI
Transmission: T-5
You might need a better intake, is that just a regular performer? If so it may hold you back above 5500 RPM where that cam is just starting to pull good, you might do better with a Performer RPM or Air Gap RPM.
Supreme Member

Joined: Jan 2002
Posts: 3,852
Likes: 1
From: Valley of the Sun
Car: 82 Z28
Engine: Al LT1 headed LG4 305
Transmission: TH350
Axle/Gears: 3.73 posi with spacer
Thats not a big cam at all, infact you might want to go bigger to get your DCR down since your using 416 heads with small chambers. But that intake sure does suck, and will hold you back.
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