Small block 383 build-up
10-18-2005, 01:51 AM
#31
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Location: medellin colombia, pablo escobar's lil town
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Re: Small block 383 build-up
use the longest rod that you can fit in any combination you built for a better rod ratio. you will need to mock up the assm with the cam degreed in. you will have to grind the block for clearance of a few rods and you will have to gring a few rod bolts to clear the cam. number the pistons and rods so they go back in the hole you mocked them up with. i used a .040 peice of wire to use as a go nogo gauge to check the cam to rod bolt clearance. if you cant afford aftermarket heads find a set of gm 882 castings which are common and inexpensive they are 1.92 open chamber heads which will work great with a flat top piston. you should be around 9.5 to 1 comp with the open chamber heads 3.75 stroke and flat to-p pistons. you can put 2.02 intakes in them but i dont think it would be worth the money to do it. remember that longer stroke motors will tolerate more cam duration which will help the 1.92 int valve heads. good luck with it pm me if you have any questions when you mock the short block up during your preassembly clearance work. ratman
10-18-2005, 01:54 AM
#32
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Re: Small block 383 build-up
dont forget to check you piston to valve clearance when you mock up the short block. that way you can have deeper eyebrows cut in the pistons to clear the valve if you need it. i ran 550 lift solid roller in my combo and didn't need to cut the pistons.
10-21-2005, 06:17 PM
#34
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Re: Small block 383 build-up
Originally Posted by ratman
i ran 550 lift solid roller in my combo and didn't need to cut the pistons.
10-27-2005, 11:22 PM
#36
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Re: Small block 383 build-up
Originally Posted by estonian
Thank you all for lots of usefull information. Finally I think I'm getting the picture and I will use Scat forged rotating assembly kit (forged crank, forged I-beam rods, forged SRP pistons). But still I have some questions about lower part:
1.should I use 5.7 or 6.0 rods ?
2.what would be the optimal(power/long hours) compression ratio cosidering that I have 2 bolt main caps ?
3.If compression ratio 11:1 is reasonable, would it be possible to use 98 octane petrol ?
I'm surprised about reasonable price of kits. Could you reccomend some dealer to buy it from?
1.should I use 5.7 or 6.0 rods ?
2.what would be the optimal(power/long hours) compression ratio cosidering that I have 2 bolt main caps ?
3.If compression ratio 11:1 is reasonable, would it be possible to use 98 octane petrol ?
I'm surprised about reasonable price of kits. Could you reccomend some dealer to buy it from?
I assume when you say you want a crank for a 1 piece rear seal it is because you are certain you have a 1 piece rear seal block, 1986 or later?
You will be fine on 98 oct w 11:1 CR. higher octane is safer.
In the US 92 octane is readily available so 9.5 or 10:1 compression is common.
email me.
We ship internationally
Thanks
Evan
