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. What was the current engine in there? I'd suggest:


. Since buying a rotating assembly, might as well go a 383" one...


. Since buying a block and rotating assembly, might as well buy ones that match and skip the rear seal adapter...

. Skip the hokey low lift for OEM-style lifters Thumpr cam and OEM adapter stuff and put a real roller cam in there with high lift for power... for high lift style linked retro-style roller lifters (like shown in your listed cam kit, but don't actually come with it)... step back about 10 degrees on duration to about 234/244... to better match heads and for more daily drivability... Howard's real roller cam/real roller lifters at a better price...


http://www.summitracing.com/parts/hrs-cl120605-12?seid=srese1&gclid=CMvb98GWjsUCFQoKaQodRzMA2A

. Switch to custom built torque converter:

http://www.ebay.com/itm/GM-350-TH350-TH400-Powerglide-Stall-2400-Torque-Converter-9-5-/271837925321

. 650 CFM carb. too small for your build, jump to 750 CFM... What's on there now?


. Gauges prolly work if hooked up...
.
 

· Cars, Trucks, Boats, Motorcycl
Joined
·
8,401 Posts
. Of course a big block would fit, it was an ordinary option earlier in that body series... but a hot small block will blow away the big blocks they were using by then... even the earlier ones...


. We don't talk stroke:bore... we talk bore:stroke... and a 383 is still an oversquare engine that likes to rev with bigger 4.030" bore compared to still smaller 3.75 stroke... and, like Eric correctly pointed out, by '78 Camaros had gotten heavy, so more cubes/torque comes in handy...


. The RPM intake and 750 DP would work well on the new engine...


. Building an engine that gets good MPG isn't just about MPG, it's a more efficient engine... and an engine that uses half the gas for the same power lasts longer with half as much gas washing the lubrication off the cylinder walls... and all the gas burning instead of washing off lube and polluting the exhaust...


. LOL! Just got interrupted by a loud noise, a long trailer full of dirt track cars just arrived for the build/storage building behind my garage... wasn't sure if it sounded like a car or a motorcycle out there... OK, where were we?


. Sometimes gauges can be all 'hooked up', but not work because the instrument panel lost it's ground connection, very common...


. The 305 should have idled fine with the 750 DP... it just wasn't tuned right... or it had a huge cam...


. Any cam above a 208/208 is going to lope at idle... each step bigger makes the lope worse... the lope is actually an undesirable side effect of bigger cams... but I know kids think they want one like other racers have... kinda like a fart can muffler on a poseur ricer...


. Didn't we explain all this to you before in a different thread?
.
 
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