Thread: need some advice on heads, intake and carb

Tweet

I have a 350 4 bolt main that use to be in a drag car, but i want more of a street and strip. The engine has a steel crank, .525 lift hydraulic flat tappet cam (and i dont know any other specs on it), JE dome pisons. If you all could please help i would appreciate it. I am on a tight budget now and i mainly want to buy up parts for when i do get ready to complete my project! I will take advice on pretty much anything like what heads to use as far as what combustion chamber size to use with dome pistons (the domes are not real big either, i can post some pics ) what manifold and carburetor? I have a 600 Holly i would like to use. If possible, i would like to be able to run off pump gas ( 90 to 93 octane) If there are any quesitons feel free to ask

Phillip

you really need to provide more info. Dome pistons are going to be difficult to keep compression at bay. You need to know your compression height, deck height, and dome height, ect. You will probably be limited to heads of combustion chambers 72cc and larger. Thicker head gaskets and a larger duration cam to bleed off some cylinder pressure.

Thanks for your reply. I dont know the duration of that cam, but i will try and get in touch with the guy i bought it from and see if he can give me more details. What if I just put a set of stock heads on there with a 4 barrell intake and carb? Here is a little info i found by looking up the part # on the piston....the part # is L2304. (There's not much info on the web about these pistons, except that they are a good, forged piston and have a .100" dome.

If you figure that the dome is worth 7-10cc (negative when you figure the CR), with a .039" gasket your CR will be approximately:

10.25-10.5 with 72cc heads
11.25-11.5 with 64cc heads

350ci Performance Piston, .000'' Overbore
Piston Dia.: 4.000''
Piston Top: 2.4cc Dome
Press Pin
Comp Ratio: 11.26:1 w/58cc Head, 9.19:1 w/76cc Head
Ring Grooves: 5/64'', 5/64'', 3/16''



Also I didnt mention that the block is bored out to .060 over, im sure that will make a difference too. How can I configure deck height and compression height?

Here is the link to Summit's website for your pistons:

www.summitracing.com/parts/TRW-L2304F30/

The number on those pistons are Speed-Pro (TRW) not JE. The domes are not extreme so you could easily use them with heads which have 72 cc or 76 cc chambers. Stock heads? No. I would avoid stock heads because by the time you have a pair of the old technology heads rebuilt, you will have nearly as much in them as a new set of heads with contemporary chamber design. Since you are on a budget, I would advise you to save your money for a good set of after market heads like Iron Eagles or aluminum heads. Vortecs are less expensive, but the chambers are too small for your domed pistons. You can also shop around on Craig's List or Ebay for a good set of used heads that have had minimal use.

Yea your right they are TRWs after i looked the part # up i seen that...when I bought the engine the guy had told me they were JE. Thanks for your advice I really appreciate I will definitely look for some aluminum heads.