350 combo
Thread Starter
8th Gear
Joined: Jan 2018
Posts: 8
Likes: 0
350 combo
I rebuilt the engine of my 71 C3 straight. it's a 350 with Scat forged crankshaft and Mahle forged pistons. Compression 9.5, I would like to use AFR 195 Street Heads, Edelbrock Rolling Thunder Camshaft 2201,, Howard Lifters 91164N, roller bearing rocker with 1.6 stroke ratio, Performer RPM Air gap 7501 intake manifold, original Quadrajet carburettor and original flow optimized exhaust manifolds. What do you think about this combination? Does it all fit together and which performance will come out?
Best regards
Wolfgang from Germany
Best regards
Wolfgang from Germany
Le Mans Master
Joined: Apr 2011
Posts: 6,284
Likes: 1,170
From: Hermosa
Not a fan of that cam. Long slow ramps and a 112* LSA. I believe those rolling thunder cams are for sound not performance.
origional exhaust manifolds, even flow optimized I would think it would impede the high rpm flow, which this build seems to be aimed at.
i would want 10.0 CR or better for this combo.
that being said if you are willing to sacrifice low end performance ( cam, rpm intake, 195 cc heads) and some high end ( exhaust manifolds) as well it will run ok in the mid range.
origional exhaust manifolds, even flow optimized I would think it would impede the high rpm flow, which this build seems to be aimed at.
i would want 10.0 CR or better for this combo.
that being said if you are willing to sacrifice low end performance ( cam, rpm intake, 195 cc heads) and some high end ( exhaust manifolds) as well it will run ok in the mid range.
Dr. Detroit
Joined: Mar 2012
Posts: 10,095
Likes: 4,022
From: New Braunfels Texas
Go to a smaller head and find a better cam to use.......add a point of compression. And don't bother using those expensive heads if you are going to bolt manifolds to it......negates a lot of the benefits........long tube headers are the order of the day. You also will be jetting the Q-jet.......there are people here that can help you with that.
I like this cam for your combo:
https://www.howardscams.com/hydrauli...cams-110325-10
Jebby
I like this cam for your combo:
https://www.howardscams.com/hydrauli...cams-110325-10
Jebby
Le Mans Master
Joined: Apr 2011
Posts: 6,284
Likes: 1,170
From: Hermosa
Go to a smaller head and find a better cam to use.......add a point of compression. And don't bother using those expensive heads if you are going to bolt manifolds to it......negates a lot of the benefits........long tube headers are the order of the day. You also will be jetting the Q-jet.......there are people here that can help you with that.
I like this cam for your combo:
https://www.howardscams.com/hydrauli...cams-110325-10
Jebby
I like this cam for your combo:
https://www.howardscams.com/hydrauli...cams-110325-10
Jebby
Last edited by REELAV8R; Dec 2, 2019 at 11:21 AM.
Le Mans Master
Joined: Aug 2017
Posts: 8,336
Likes: 2,809
From: Cool Northern Michigan
Not sure the spreadbore QJet will work right on a Eddy 7501, but maybe.
So you have more compression, better heads, bigger valves, more flow intake, more lift rockers,
then choke the **** out of it with cast iron exhaust manifolds.
It will run like crap with those. Similar to shoving an white spud up the tailpipe.
So you have more compression, better heads, bigger valves, more flow intake, more lift rockers,
then choke the **** out of it with cast iron exhaust manifolds.
It will run like crap with those. Similar to shoving an white spud up the tailpipe.
Last edited by HeadsU.P.; Dec 2, 2019 at 07:17 PM.
Melting Slicks
Joined: May 2012
Posts: 2,192
Likes: 343
From: Allenton Wisconsin
I don't understand the need for 1.6 rockers when buying a new camshaft. When purchasing a new cam buy one that doesn't need amplication by increasing rocker ratios. All manufactures sell them. Also the 7501 probably doesn't fit under stock hood. T
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)
Joe Kucinski
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!
Verdad Gallardo
Top 10 Corvettes Coming to Mecum Indy 2026!
Brett Foote
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!
Michael S. Palmer
10 Revolutionary 'Corvette Firsts' Most People Don't Know
Joe Kucinski
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2
Michael S. Palmer
2027 Corvette vs The World: Every C8 vs Its Closest Competitor
Joe Kucinski