Thread: Procomp aluminum heads/ kmj performance heads

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Some awesome pictures, Jerry! I especially like that low angle shot of the Pinto bodied car. Great perspective shot.

Originally Posted by Dave Severson

Kind of forced to run a breakout class or brackets these days to race locally... Not enough money to go run a Pro Class, so if we want to race around here breakout's and indexes are the only game in town... Sure is fun to get in a grudge race or the occasional heads up gambler's race once in awhile. If it was all "run what ya brung, and hope ya brung enough" I'm afraid it'd just come down to the biggest checkbook wins...

Oh yeah, and still fun to occasionally go out and play on a Saturday night---no tech lines, no scales, no breakouts---just look out for the cops!!!!!!

I had NOT see or read this before now.I do agree with Dave and the biggest check book idea.But now even the "sportsman" classes are not cheap anymore.If you where to price out on racingjunk a competitive 9.90 or 7.90 car it isn't a cheap form of racing like when the classes where first introduced.

Dave because of missing this post,I am saying I am sorry.

70chevybb,
Forgive my ignorance here, but did you stay with the iron heads 116 cc or are you in planning still?

I had a friend give me a 454 and it has 113 cc heads. I am going to replace the 402 with the 454. I am going top bore it .030 with .240 dome pistons. I will be taking it to the machine shop next week. I will keep you updated , thanks for asking.

Wes

My Bigblock was a 454
mk IV
+.030, .2something dome ( hyperutechtic )
Stock rods
stock crank
moly rings
.544 // .544 cam
113 or 114 cc closed chamber heads ('68-69 vintage)
long slot rockers
RPM intake
Holley 750 double pumper

By all means not a race motor, but good grief the thump & thunder ( LOL )
torque was a BLAST in my ol' '75 Camaro!!

IDK what the Torque rating was, or the HP, but it was a blast. You will notice the diff in torque!

I for 1 am interested, so if you post-up I'll be following!

......Rob......

well if it needs a crank or fresh turn and you need pistons any ways you could just build a 489 or 496 use a cast steel crank. speed pro makes hpyer pistons or KB s with a stock 6.135 rod i built many .fun engine to build over all cost over a 454 would be less then $450. over the cost of a 454 if your buying new parts and getting it balanced any ways.i have two short blocks going together now

Easy on me guys, remember I am building this for a daily driver. I am still having a hard time on cam selection. I do think I will be ging with flat tappet. I really like the comp cam mahgnum292. I only say that as in the mid 80's I had a chevelle with a 396 and the same cam. It was a daily driver year around and by far the best running bb I ever had.

Originally Posted by 70chevybb

Easy on me guys, remember I am building this for a daily driver. I am still having a hard time on cam selection. I do think I will be ging with flat tappet. I really like the comp cam mahgnum292. I only say that as in the mid 80's I had a chevelle with a 396 and the same cam. It was a daily driver year around and by far the best running bb I ever had.

With the reduced quality of oil available today I would not consider a flat tappet cam, even for a daily driver. You can wipe a lobe too easy, and once it starts wearing it will grind the lobe to nothing in a few thousand miles, and the engine will be eating the abraded cam lobe metal to take out the rings & bearings with it. Sure you can run zinc additives, but why risk it?

Originally Posted by rspears

With the reduced quality of oil available today I would not consider a flat tappet cam, even for a daily driver. You can wipe a lobe too easy, and once it starts wearing it will grind the lobe to nothing in a few thousand miles, and the engine will be eating the abraded cam lobe metal to take out the rings & bearings with it. Sure you can run zinc additives, but why risk it?

times two and the roller cams offer so much better profiles

Use good oil problem solved, valvoline v.r.1 or Schaffers ran v.r.1 in old nova motor never had valvetrain issues or cam problems.

Originally Posted by gassersrule_196

Use good oil problem solved, valvoline v.r.1 or Schaffers ran v.r.1 in old nova motor never had valvetrain issues or cam problems.

yep and it was a BBC ? NOPE sbc chevys do not have lifter bore angle problems .some lifters were floating around that were junk . i built many sbc with flat lifter cams . but sooner or latter you going to have one bite you in the ass do you feel lucky... if the engine had a good history .not of a cam bore angle to crank .or lifter bore s then you may get away with a flat lifter cam with low spring lbs .big flat lifter cam and bigger valve springs low oil splash at idle that is when things get to be fun. i done many them as well and there are things that can be done to help them live but a roller cam is by far better way to go newer block come with roller cams .so you could just save the money build a retro roller kit for you older bbc or pick up a mark 6 bbc roller engine

I have noproblem running a roller cam but help me out a little. Here is what I am building. 454 .030 over with .210 dome speed pro pistions which will give 9.7 to 1 compression. I will be using the stock heads with stgainless valves. I would like to run full roller rockers. I will use the edlbrock performer or performer rpm intake and a 750 carb. mallory ignition. It will be infront of a th350 and 3.08 gear to start. At some point I would like to upgrade the trans to a 700r4 and the gear to a 3.73. This will be in a 70 chevy truck with an 8 foot bed. If you have some good choices please let me know.

Thanks, Wes

Do you want to run with a stock rated torque converter or are you thinkig about a higher-than-stock converter?
About how much does the truck weigh?

Originally Posted by 70chevybb

I have noproblem running a roller cam but help me out a little. Here is what I am building. 454 .030 over with .210 dome speed pro pistions which will give 9.7 to 1 compression. I will be using the stock heads with stgainless valves. I would like to run full roller rockers. I will use the edlbrock performer or performer rpm intake and a 750 carb. mallory ignition. It will be infront of a th350 and 3.08 gear to start. At some point I would like to upgrade the trans to a 700r4 and the gear to a 3.73. This will be in a 70 chevy truck with an 8 foot bed. If you have some good choices please let me know.

Thanks, Wes

used many hyd rollers over the years let me know if you want to run a stock stall and if you going to be pulling any thing with the truck if so less stall to no stall over stock and i tell you what i used in the past builds

I am not pulling anything. I was planning a 1700 to 2100 stall.

Wes