400 SBC Build Help Wanted!!
#1
400 SBC Build Help Wanted!!
Hi everyone.. I recently bought a rebuilt 400 sbc shortblock engine.. I am planning to put it into my restored 1979 gmc sierra classic C-15 pickup.. I was just wondering if I wrote down here all my specs would someone give me and idea for a cam? I wud like it to be a torque monster lol. so no high reving over 5000 rpm. Here are some specs.. th700r4 mild shift kit stock converter.
im gonna use 350 vortec heads
3:73 axle ratio
edelbrock performer vortec intake
im guessing 10.5:1 compression with those pistons cause they are factory dished type. tire size 255/60/15. thnx so much for your time.. Ben
im gonna use 350 vortec heads
3:73 axle ratio
edelbrock performer vortec intake
im guessing 10.5:1 compression with those pistons cause they are factory dished type. tire size 255/60/15. thnx so much for your time.. Ben
#3
TECH Junkie
Back in 92-93 I built a 406 that was a torque monster. At the time a comp 280 fit that bill. Close to 500 lbs ft. with double hump heads.
#4
8 Second Truck Club
iTrader: (32)
I worked in a performance oriented engine machine shop for over 10 years and have had a hand in building many 400 sbc's. I can almost promise you that there are cracks in the deck in various places, but especially around the small steam holes between the cylinders. It's not that big of a deal because it can be repaired by a shop that is familiar with the process. Get that checked out and build on.
#5
I worked in a performance oriented engine machine shop for over 10 years and have had a hand in building many 400 sbc's. I can almost promise you that there are cracks in the deck in various places, but especially around the small steam holes between the cylinders. It's not that big of a deal because it can be repaired by a shop that is familiar with the process. Get that checked out and build on.
Also heads will need the steam holes drilled as well as in head gasket.