Thread: 454 build for a 70 Camaro L78 car

Tweet

I received a couple of 454's and some new parts for one of them as trade I did on work to a Dodge Ram. I happen to have a 70 RS/SS Camaro roller that is a L78 car. I had recently aquired a 72 402 for it but I have been thinking of using this 454 stuff and putting the car together as a day 2 muscle car. Here is what I have currently.

454 14015445 4 bolt block

336781 heads oval open port 118cc chamber 256/114cc ports 2.06/1.72 valve sizes
If the heads check out alright I was thinking of having the bowls blended and I could smooth out the ports/polish them to help a little.

Sealed Power new pistons H693CP

https://www.summitracing.com/parts/slp-h693cp/

With these pistons and heads, according to the compression ratio calculator, if I used a .040 thick head gasket, it would net 9.94:1 compression.

New Scat connecting rods 2-ICR6135

https://www.summitracing.com/parts/sca-26135/overview/

A new 11-213-3 cam

https://www.compcams.com/magnum-oval...k-396-454.html

New HT-817 lifters

New 924-16 valve springs

https://www.summitracing.com/parts/cca-924-16

New locks and retainers 612-16 741-16

New SBI 5/16" 192-1338 and 192-1339 push rods
9.200" Length Exhaust
8.230" Length Intake
5/16" 0.312" Outside Diameter
0.060" Wall Thickness
Welded Ball Tips With Oil Holes

I have an oval port Weiand 5981 tunnel ram lower with a 1933 weiand single carb upper or an Edelbrock RPM air gap 7562 rectangle port intake to choose from.

I'd probably go with some roller rockers, a good double roller timing chain, and a melling oil pump. I have a HEI distributor for it too.

What kind of power could this set up make? Would those pistons take small amounts of nitrous if it is an option later? This car will get a 4 speed and my Hurst Ram Rod shifter and will just be a toy. I'd like to take it to the track and play so the kids can get the race track experience. I'm open to changing things to make it all work. I have been out of the BBC game for a long time and would like to have a good usable combo on a budget the first time. I haven't taken the block to the machine shop yet but plan to soon.