Thread: SBC 327 Combos

Tweet

I have a 327 block thats ready to go to the machine shop with a pair of camel hump 64cc heads. I have gotten a few combo's and recomendations from a couple friends. Does anyone here have any combos or recomendations that have worked out good for you? I'll be looking to drive it on the street some but would like to drive it to the track to have some fun also. Is 400 hp a feasable goal with these heads?

Are you planing on running the stock pistons? If so then no, if your going with a flat top then those heads will work for you, and 400 is going to require some money....about the same as doing a stroker, or a 436 thumper.

Originally posted by Smokin65
I have a 327 block thats ready to go to the machine shop with a pair of camel hump 64cc heads. I have gotten a few combo's and recomendations from a couple friends. Does anyone here have any combos or recomendations that have worked out good for you? I'll be looking to drive it on the street some but would like to drive it to the track to have some fun also. Is 400 hp a feasable goal with these heads?

That's a tall order for a 327. It can be done but street manners is out the door. You will need 10:1 CR and a good street roller in the range of about 240+@0.050. The heads will need some major port work. This would be much easier goal with a 350 stroked.

WEll ... I have this one ... and I got it free .... the heads and a th350 too. Not a bad deal huh... hard to beat that. I was planning on getting a new forged bal rotating asslby, and I knew the heads would need some work to get there.

oh ho not again. someone lock scooter door oh no it is to late i hear him coming

Originally posted by pat mccarthy
oh ho not again. someone lock scooter door oh no it is to late i hear him coming

I kinda figured he would have been the first one to reply.....

im sure he will be on here

Originally posted by pat mccarthy
oh ho not again. someone lock scooter door oh no it is to late i hear him coming

I'm getting out this one

http://www.summitracing.com/catalogs...nfeb/053f.html

on this catalog page they have a kit from sealed power
Forged -- 11.86:1 cp -for-64cc
Too much comp?

that is a bit for the steet if you do not mind race fuel but with the right roller cam it would get the job done you may want to look at the dart iron eagle heads

so with the cp at 11.86:1 it would not run on pump gas? what about @ 10.35:1? and where is the limit?

yes there is but if you o deck it and do some work you may get by at 10-1/2to1 maybe this is all i would try but i seen more. it up to you but to be safe side no more than 10 -1/2to1for junk pump

Thanks Pat,

I have build several 327 mills... Here are a few examples of what I have done... keep in mind that I am usually building on a budget, looking to get the best bang for the buck...

First off, I think a good place to begin is to look at the specs of the L79 motors that were offered by the factory and were rated at 350 hp...

I would probably step down on the compression of the L79 from 11.0:1 down to a flat top piston around 10.25:1 to keep it on pump gas and allow you to mill the heads if needed... You will probably want to bore the engine which will give you a few more cubic inches while giving you a new clean cylinder surface to work with... You did'nt mention what size valves your heads had, but I would definately consider going to 2.02/1.60.. The last set of feulee heads I had built for a 327 I went with 2.05/160... As far as a good street hydraulic camshaft I usually go with about a 210/455 cam which you will need to run with a stall-converter for best results... A set of anti-pumpup lifters and stamped steel roller-tipped rockers should work just fine. I have run several options for carberation, the photo below shows a stock chevrolet 2x4 low rise intake from a 62 Vette with twin Carter AFBs... I also have a 327 which uses a Torker intake with a Holley 750...

O.K... with that said here is where you can really make a difference if you are looking to have a quick street car... Tranny and gears... Understanding that there is a difference between having a quick car and a fast car, with a 327 you can definately do quick... To make that turbo 350 tranny perform you are going to need a 1000-1500 stall converter to get your power to the ground without bogging on the low end, a shift kit will also help but I usually opt to have to have a transmission expert built mine so that it shifts hard... A good set of rear-end gears will help too, I like to stick with 3:23-3:55 to keep the car streetable but still quick... I would definatly not go any higher than 4:11 if you want your car to be truely streetable...

The engine in the photo below is a large jornel late model 327 and was built using the specs above...

Hope this helps...

Dave Brisco

11:5-1 will be fine on gas if not use a bottle of booster boo hoo 5 bucks u can make 450 horse with a solid cam. email me for details!!!! i dont feel like being called a liar on the thread AGAIN.............