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4 bolt mains
Hello! im wondering if there is any interest in a 4 bolt main caps for #2 and 3 journals. I will be designing a set for myself with the related drill jig for a rwd block, im sure the caps will work on the fwd blocks as well. they will be a 4130 material and hopfully enable 6-700hp. I am currently running a twin turbo 3200 hybrid in my chevette, im making 387hp and 483lbft @ 10psi and 413hp and 539 lbft @ 15 psi at the crank and i am starting to stretch the 2&3 caps and take out the bearings. im gonna be building a 3500 hybrid off a 3.4 this year and hope to make 500hp & 600lbft (4 and 500 wheel respectively).
heres the car:
dyno:
http://www.youtube.com/watch?v=CGKYJJ1Iurc
12.97@109 mph car will do 112mph still working on getting the power down.
http://www.youtube.com/watch?v=iPnjs...eature=related
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04-05-2008 09:50 PM
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Captain of the Failboat
Im not sure the oil pan on the 3400 allows for the 4 bolt main setup. I could be wrong but its crossbolted to the pan unlike the stamped steel pans.
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6 > 1
i've seen your videos before, nice setup!
yah, the FWD gen3 blocks have crossbolted mains.. i haven't heard of anyone having bearing issues related to power output with those.. still a good idea for the older blocks though.
1989 Camaro RS; Cammed 3500 swap, 45mm ITB's, Street/Strip Kitted 700R4, 3500 stall, Megashifter, 3.73 posi, EQ- LT headers, 3" Hooker Supercomp exhaust, etc...
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Originally Posted by
SappySE107
Im not sure the oil pan on the 3400 allows for the 4 bolt main setup. I could be wrong but its crossbolted to the pan unlike the stamped steel pans.
yea the caps would be for the rwd 2.8,3.1,3.4 and fwd 2.8,3.1. i heard of some ppl using ford caps before...any one hear know what caps may have been used
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Iron Head Enthusiast
GM has 4 bolt caps on the aluminum Bowtie block. Maybe the caps are available separate or perhaps you could source a similar setup. Or a splayed small block cap might be able too be machined to work.
1993 EXT. CAB, 3.4L V6 TBI, 5spd manual. Sonoma
1990 4Door, 3.2L V6 TBI, 5spd manual. 4X4. Trooper
Because... I am, CANADIAN
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Originally Posted by
betterthanyou
GM has 4 bolt caps on the aluminum Bowtie block. Maybe the caps are available separate or perhaps you could source a similar setup. Or a splayed small block cap might be able too be machined to work.
the caps and block are discontinued and i have yet to find a cap that can be made to work
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Iron Head Enthusiast
Well a SBC has smaller mains so a shop would have to machine the caps. But the bolt holes and stuff may pose a problem.
1993 EXT. CAB, 3.4L V6 TBI, 5spd manual. Sonoma
1990 4Door, 3.2L V6 TBI, 5spd manual. 4X4. Trooper
Because... I am, CANADIAN
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yeah, Im in.. Ill buy a set if the outer bolt holes were splayed a bit
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Originally Posted by
Ortie666
yeah, Im in.. Ill buy a set if the outer bolt holes were splayed a bit
yea the holes will be splayed and positioned as per gm's blueprints. ill work on a price once i get a working set. Nice to see another chevette owner using the 6-60* its nice and light and very powerful
Last edited by chevette_boy; 04-08-2008 at 06:54 PM.
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Making it work
I'm interested in the outcome.
Since my next motor is going to be a big-power twin turbo, I need all the help I can get since I want to see what a 3.1/3400 can really do.
You could save yourself some dough by using a 3x00 block. The 3x00 block is actually stronger. A local has split a 3.4 block down the valley in a 300+hp N/A sprint car (I sold him a 3500 block 
) running 14:1 SCR and a 6000rpm max.
Nice job on the car, BTW.
500-600 is also my goal as well, trying for 250whp N/A first.
What compression/turbos/fuel are you using?
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