help building a motor

[86chevybanshee]

I need to start build a motor for my s10, what i have is a 79 350 block bored .30 over 2 bolt main. i want it to be pushing somewhere around 400 h.p. what do you guys suggest doing.

i need to get everything, all new bearings, rods, pistons, cam, heads, crank, intake, carb, etc

any suggestions would be great

 

[sled_dog]

budget? this an offroader or a street machine? fuel injection, propane, or carb?

do you really need a crank and rods? I'd stay with the stock ones for only 400 hp if you don't NEED new ones.

 

[86chevybanshee]

well for the budget id like to keep it around 3,000. this is a street truck, i think im gona keep it carb'ed,

i do need new rods and a crank i got it from a friend that was gona build it up, but lost interest in it and gave it to me, he droped of the block and never gave me the crank and rods, cuz he needed them for another project

 

[86chevybanshee]

and i was thinking a set of AFR heads

 

[sled_dog]

AFR heads are a really good choice, I'd get them if I have the ching. I'd say 180cc heads. No idea what those run, probably around 1000, 1200.

 

[86chevybanshee]

yea i figured id spend around 1500 for heads.

i have till the end of the summer to get this motor together but id like to start getting the pieces together

 

[sled_dog]

Rods- http://http://store.summitracing.com/partdetail.asp?part=ESP%2D5700BBLW&N=120+4294925232+4294922129+308978
Crank- http://store.summitracing.com/partdetail.asp?part=SES%2D3%2D48%2D05%2D000&N=120+4294925232+4294922104+308667
Cam and Lifters- http://store.summitracing.com/partdetail.asp?part=CCA%2DCL12%2D242%2D2&N=120+4294925232+4294924497+309525

Look on Ebay for SpeedPro Hyperuetic Pistons. Cheaper than Summit or Jegs.
Heads, don't know Jegs and Summit don't sell AFR(no idea why).
Misc bolts, ARP stuff.
Intake, Edelbrock RPM or Torker II.

Ran through desktop dyno with that cam, .030 over, AFR 190cc heads, and about 10:1 compression came up with just over 400 HP. Would be a good street motor.

 

[86chevybanshee]

what about and airgap rpm intake. what do you recomend for a carb? i got an edlebrock that came on my truck, dont know what cfm it is but its about 3 months old?

 

[sled_dog]

Barry Grant carbs rock. Any of his Demon Carbs would be good.

 

[dmanblazer]

I bought a set of those Speed Pro Hypereutic pistons for my .060 over 350. My balance guy said that they were to heavy and if I had lighter pistons it would help with engine response. He told thar Claimer pistons are lighter and would work better, but I bought some Wiseco Pro/Trues (forged) instead and they work better, really responsive!!!!!

 

[dirtwarrior17]

Your motor but fuel injected

I have a 355 with an lt1 block, 10:1 speed pro flat top pistons with moly rings, gm x con rods(good for 8000 rpm), Camel hump heads 2.02 int. 1.60 exh., holley projection efi manifold, holley 670 cfm 2 bbl tbi, comp cam replacement for the gm l-79 cam 272 dur 447 lift, accel high pressure fuel pump, with headers and a k and n. Desktop dyno says 382hp at 500, 386 hp at 5500 and 421 ft lbs at 4000. Has over 385 ft lbs from 2000-5000. Got it running for a little under $2700 but thats with the torque converter and a bunch of adapters to go from an 88 block to a 77.

Only difference between the motor your gonna build and the one sitting in my truck is it's fuel injected and the heads don't flow as good as the arf's. With those heads you will be right around 400 hp at a little higher rpm.

1500 is alot to spend on heads if your budget is 3000.

 

[dyeager535]

IMO the pro-topline vortec replacement heads would be an excellent choice.

Aluminum heads are awesome, so it really depends on your budget, but you can find a pair of the pro-toplines for just over $500, which may allow you to spend $$ on other stuff. Advantage to the Vortec stuff in your case is the intake, since going carbed, Vortec intakes aren't really a hinderance.

Just an idea, depends on how other stuff adds up!