[old76c10]

ok here is what i have im wanting to build my old 76 c10 long bed up i have a fresh 30 over 4 bolt block stock crank and rods forged 11 to 1 trw pistons they are 11 to 1 at 64cc i have access to a set of double humps,i have a victor 4+4 intake 750 holley ,and a comp cams 292H cam kit cam,lifters,and timing set,i also have a set of long tube headers...now ive built plenty of engines just never one with this much in it i dont have it put together yet i just have all these parts so far.now i need to know what else i need parts wise and labor wise with part numbers if anyone has ang good ideas im open,id just like to use what i have and not have to buy a butt load of other stuff....i plan to get comp roller rockers,springs and push rods to go along with the cam set....it is a hyd flat tappet by the way and certain gaskets i need? also anyone got an idea of what this thing will put on the ground? backed by a th350 and 3400 stall? i still havent made my mind up on gears yet 4.11 or 4.56? thanks for any help!!!
oh yeah im ready to put this together!!!

[techinspector1]

There must be hundreds or maybe thousands of guys that have 350 blocks and double hump heads taking up space in their garage, so this should be of interest to a few of them.

Brzezinski has said on their cylinder head site that of all the double hump 2.02"/1.60" heads they have flowed, they average the following flow figures, so I feel confident in using them on a DynoSim pull.
.100 64 57
.200 128 107
.300 173 125
.400 195 141
.500 202 141
.600 202 141

350 SBC, double hump heads, 2.02"/1.60", 11.0:1 static compression ratio, single plane intake, 750 carb, 1 5/8" long tube headers.
http://www.compcams.com/Cam_Specs/Ca...x?csid=81&sb=0
RPM HP TQ
2000 126 332
2500 166 349
3000 207 362
3500 263 395
4000 317 416
4500 362 423
5000 394 414
5500 419 400
6000 426 373
6500 419 339
Peak volumetric efficiency 92.3% @5000
Peak BMEP 174.1 @4000

Swapped to dual-plane, high-rise intake such as Edelbrock Performer RPM #7101, Edelbrock Performer RPM Air Gap #7501, Weiand Stealth #8016, Holley #300-36 or GM iron intake #14096011. These intakes are basically knock-offs of the Chevy 302 Z28 intake manifold of the late 60's. No other changes were made....

RPM HP TQ
2000 126 331
2500 161 338
3000 207 362
3500 269 404
4000 328 431
4500 384 448
5000 427 448
5500 446 426
6000 453 396
6500 435 352
Peak volumetric efficiency 102.1% @5000
Peak BMEP 193.0 @5000

[old76c10]

so in other words i need better flowing heads?how bout some dart iron heads with 215 runners?

[DoubleVision]

No, he was showing you the difference between a single plane intake and a dual plane comparison to power. Is this going to be a street vehicle? with 11:1 pistons you`ll be forced to use race fuel.

[old76c10]

just a weekend truck but most weekends at the track id like to drive it there though

[old76c10]

i just want to build a monster out of parts i have on had without having to spend a whole lot more...i do also have a performer rpm on the truck as we speak so i could use either or thinking about going all forged though so i can rev the crap out of it

[techinspector1]

Originally Posted by old76c10

...without having to spend a whole lot more...

...thinking about going all forged though so i can rev the crap out of it

I don't see how these two thoughts necessarily go together.....

[old76c10]

well for one the pistons i have already are forged i got a deal going now on a crank and a set of rods for a pretty cheap price so i would say they go together pretty well the heads right now would be my only set back but still not out of my budget since i already have the other stuff on hand....like i say though im asking for help on this and not tryin to be a know it all because im by no means that...im looking for suggestions and i do appreciate any and all help on gettin the most bang out of it with out stroking or a bottle but that being said i might consider a bottle as well just havent put it in the plans as yet!!

[ap72]

unless its restricted to track only driving with race fuel I would step the compression down. Having to pay $6 a gallon for gas to drive on the stret is a PITA and so is finding it in many locations.

[old76c10]

i have thought of that too we have 2 fuel supply company's right here in town that does sell it but like i say its just gonna be a weekend toy to play with i dont want to be all serious in the racing just like to go and have a good time and take the kids...good clean fun without trouble but would like to make a good showing!!!!by the way i like the signature under your name

[ap72]

TO be honest if you don't already have the cam, you can make a better street showing and stay on pump gas with a few tricks. I'll post more tomorrow, I need to get to some stuff for now.

BTW thanks for the compliment, its a question I don't think I'll ever be able to answer...

[F-BIRD'88]

11:1 is a bit much. Lower the cr to a usable 10.25 to 10.5:1 for (92-94 octane) premimum pump gas.
Excessive cr for the gas octane is just a pain. Detonation really shortens the life of a engine.
If the pistons are solid dome design you can mill some or all of the dome off.
You can also open up the 64cc chambers to good effect to around 68cc.
A combination an be used to get it just right.
You must CC the heads to see what the chamber CC really is now and go from there.
You want the finished cr up there but as soon as its excessive, its a pain.
Worth the effort to get it right.
The truck is pretty heavy.

The 4.56's would be a starting point. especially with a tall tire.
You can use up to a 4000 stall 9" converter and 4.88 5.13's if you want it to be all it can be.
The truck's weight needs the gear ratio leverage and the motor will want the rpm.
Any numbers stamped on the piston top? how high is the dome?

How about making life easy on yourself and start with a 70-72cc chamber hi perf head.?