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HybridZ

really confused need help.


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Ok here is my problem, about a month ago I purchased a 355 which was running, the guy I bought the engine from conned me. he said the engine was too much for his son- long story. anyways the engine was in thecar, and it sounded great.

once I got the engine home and did a compression check, posted the #'s grumpy said it was in the 12-1 range. it had a set of 305 ho heads on it, shaved .040 head #416.

further inspection of the block shows scoring of the # 4 cylinder wall.

so now I need to rebuild.

here is where I need help. I am planning on purchasing a set of summit .060 over -5cc flat top pistons. the cam I am planning on running is this cam:erson cam.

E113421 Street and Strip. High-lift, dual pattern. Rough idle. Good mid and top-range horsepower.

Needs 4-barrel intake, headers and lower gears. OK with automatic and 3,000 RPM stall

speed torque converter. 9:1 compression or more.2,800- 296° IN 228° IN .472" IN 110° 4° .000" IN

6,200 TQ50H 306° EX 235° EX .472" EX .000" EX

I returned the tri y I purchased from edl and purchased eld rpm air gap,

I dont have the money for the heads I want, put a machine shop has another pair of 305 heads for 250, fresh valve job.

if I put this engine together like this , with the crappy 305 heads will it run decent untill I can get the set of heads I want.

this has turned into more of a headache then I planned.

thanks for the help.

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IIRC, the 305 heads have some pretty small valves. I don't see much point in using those on anything but a 305. I see you're in SD. If you ever come up to LA, I've got a decent set of 76cc 350 heads that I'll trade you for a 6 pack. I think even a stock 350 head with 194 valves would work better than a 305 head.

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its the total combo that gets results and the cylinder heads are critical to the final numbers(power) but IM ONLY TOO well aware of how budgets restrict choices.

those 305 heads will NEVER produce good hp simply because they don,t flow enought air. and they have a small combustion chamber that raises cpr and tends to be a problem with detonation.

 

IM some what confused here, if you have 305 heads why purchase a new(used rebuilt set of 305 heads) the .040 milled surface is just not going to be a huge factor here,IF YOUR STAYING WITH 305 HEADS ,personally ID look around for a decent set of 350 compatable heads, AND NOT EVEN THINK OF USEING THE 305 heads

 

http://www.midwestmotorsportsinc.com/order_part.php?item=PHEAD&line=MWM

 

http://www.midwestmotorsportsinc.com/order_part.php?item=PPHEAD&line=MWM

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