Carb 84 cam suggestions
Thread Starter
4th Gear
Joined: Oct 2023
Posts: 4
Likes: 1
Carb 84 cam suggestions
Hello, I currently have a carb converted 84 with a performer manifold and 650 cfm carb. Im looking to get a cam that will be able to give me a street/strip performance gain. I currently have stock heads but id like a cam that would allow me some room for better heads in the future, i already have half the motor torn down, i just dont want to junk these heads as theyre in pretty damn good shape for how old they are, lifters, springs, rockers all look brand new. I believe they are the 626 heads. If anyone has any suggestions feel free to let me know
Drifting
Joined: Mar 2006
Posts: 1,263
Likes: 188
From: Wabasha Mn
Hello, I currently have a carb converted 84 with a performer manifold and 650 cfm carb. Im looking to get a cam that will be able to give me a street/strip performance gain. I currently have stock heads but id like a cam that would allow me some room for better heads in the future, i already have half the motor torn down, i just dont want to junk these heads as theyre in pretty damn good shape for how old they are, lifters, springs, rockers all look brand new. I believe they are the 626 heads. If anyone has any suggestions feel free to let me know
Thread Starter
4th Gear
Joined: Oct 2023
Posts: 4
Likes: 1
If you don't have the Z51 package the best thing to do is get a 3 .07 or higher rear gear. Do you have the 700r4 or manual trans?? With stock 624 heads you could run the old comp 268 HE cam or similar for a performance boost. I have a carbed 84 with Summit/Dart 152123 heads , mild stall converter and Isky solid lifter cam. True dual exhaust with factory exhaust manifolds. Runs pretty good!
Drifting
Joined: Mar 2006
Posts: 1,263
Likes: 188
From: Wabasha Mn
Le Mans Master
Joined: Aug 2017
Posts: 6,940
Likes: 1,490
From: New Jersey
You won't gain much of anything with a cam on those heads... I'd also suspect you'd run into clearance issues going much higher in lift. The 268 would probably need a new retainer and springs to sneak by. IIRC stock they're done around .450 or so....
Thread Starter
4th Gear
Joined: Oct 2023
Posts: 4
Likes: 1
So i think im just gonna hold off until i get new heads, going to run the stock stuff a bit longer after spending so long getting it running decently, the plan was to do it one major component at a time but i think im just gonna hold off and build the whole thing at once than, and yeah the rear gearing is definetly an issue, thats gonna be awhile though before im able to change that out.
Racer
Joined: Mar 2020
Posts: 387
Likes: 148
From: Langton, Ontario, Canada
2025 C4 of the Year Finalist - Unmodified
650 Carb is very good for your setup now. Any bigger and you'll get bog when you don't want it. Concentrate on the other things for bigger gains for your buck. You got the right path started with your last comment.
Thread Starter
4th Gear
Joined: Oct 2023
Posts: 4
Likes: 1
After i got it running for the first time since '98
Gutted a bit
painted the heads
c4 buddy, mine on the left
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Drifting
Joined: Nov 2018
Posts: 1,759
Likes: 647
From: USA
If you don't have the Z51 package the best thing to do is get a 3 .07 or higher rear gear. Do you have the 700r4 or manual trans?? With stock 624 heads you could run the old comp 268 HE cam or similar for a performance boost. I have a carbed 84 with Summit/Dart 152123 heads , mild stall converter and Isky solid lifter cam. True dual exhaust with factory exhaust manifolds. Runs pretty good!
So i think im just gonna hold off until i get new heads, going to run the stock stuff a bit longer after spending so long getting it running decently, the plan was to do it one major component at a time but i think im just gonna hold off and build the whole thing at once than, and yeah the rear gearing is definetly an issue, thats gonna be awhile though before im able to change that out.