Thread: new to big block world

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ok back to the begining. got a jeep the other day which has a supposid 454 in it. heads on it are the 781. but the number on the block by the alt are wierd... they are c8f441236.. any idea? i cant get to teh back casting numbers to see. there are also some numbers directly in the front center of teh block below intake that are-T0410TSH not sure if they are number or letter O but.. yeah

anyways.. any insite on this??

Right on, another mud guy. I was thinking about using one of those comp extreme 4x4 cams in my 461, only issue is I need 15" of vacuum in my class. my latest engine is a .030 454 with 215 heads, .219 valves and flat top trw's. I am running a melling torque cam in it, same cam that I had last season on a stock motor with smaller valves and I had a hard time getting more than 4800rpm out of it. you must be running in shallow pits to run 40's on a small block, I run 35"boggers with 5.13 gears and I still need low range.

not sure exactly how much vacuum they put out but on my last 355 the highest rpm range jegs carried in the extreme 4x4 had enough vacuum to run brake booster and vacuum advance without a problem.
my mud ranges from open fields to hood deep to i never should have even thoght about going there lol

I checked comps site and the highest range bbc xtreme 4x4 cam runs 234/244 duration at .050 and, 111degree lsa and a 107 intake centerline. I am thinking about trying out this cam possibly with rhoads lifters. I wonder if it would make anywhere near 15" of vac.