4 bolt mains

[chevette_boy]

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=iPnjsS435XA&feature=related

[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.

[Superdave]

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.

[chevette_boy]

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

[geoffinbc]

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.

[chevette_boy]

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

[geoffinbc]

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.

[Ortie666]

yeah, Im in.. Ill buy a set if the outer bolt holes were splayed a bit

[chevette_boy]

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

[ForcedFirebird]

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?

[chevette_boy]

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?

id love to run a 3x00 block but its more work than its worth to make it fit in the car. i would like to make 500hp 600lbft this year which is not much more than i made last year. im running 8.8:1 compression, mitsubishi 13c turbos and 94 octane at 10 psi and 25% c14+ with the 94 @ 15 psi

[Ortie666]

I was thinking of using a FWD block, then mounting a reverse starter on the top back side of the bellhousing, kind of like those Quarter Master bell's used on latemodel stock cars.. Instead, I will be going with just a 3.4L also.. But still might do that so the starter quits getting heat soaked from the headers..

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

Yeah, there fun cars to have V6's in and big tires on.. Kind of like a glorified Go-kart. I would like to see some other pictures of under the hood tho.
Ohh, and I noticed ur from Manitoba, Im from Saskachewan, I think June there is a Drifting demo at the Brandon Airport I will be attending with atleast one of my cars

[Wiz85]

Well Ortie666 and chevette_boy, I'm currently doing a Gen 3 3100 swap in my swap but of course I'm having problems. Yes I would like for the starter to be on the passenger side, mechanical distributor (no now), engine mounting to be the same on the RWD block, a clockwise spun water pump, shallower oil pan, andfor the coolant to return to the front of the engine. But as I learned that RWD blocks are quite a bit different. I wanted to fab my own intake for a Holley and with a mechanical distributor but it's looking to be harder than I thought to make it work.

I thought I could mill off the intake runners on the LIM and fab up some straight runners to a carb flange. But I'm thinking about making a custom UIM with a carb flange instead.

And I also thought I could flip the LIM 180 degrees to run the thermostat in the front but it hits the timing cover. Well that's no prolem I can cut it off and reposition and reweld, but I didn't know that coolant doesn't flow through the LIM at the front of the head or basically there's no provision for coolant flow on the opposite side of the thermostat. So I don't wanna do that b/c if I flipped the lower intake around, I wouldn't get good water flow at the back of the head. So if somebody knows if other year LIMs flow both front and back of the head, that would be great would be willing to buy it.

Now I would like to run a distributor for now until later when I'm going to run a full stand alone. But I'm not even sure if a distributo will fit, looks like it's going to hit the intake.

The starter makes everything seem really close and as far as my wp problem (since only running wp, alt and crank pulley), I machined last weekend an idler pulley close to wher the A/C was and that should solve that. Oil pan I'm cutting up and rewelding to fit. But the bright side is, the heads are the best flowing heads on 3100s and their Aluminum.

[SappySE107]

I am not aware of anyone having an issue after the lower intake has been flipped around. I never thought about the coolant flow with the head blocked off at the back now, but I will be doing this in an MGB swap. I would hate to have to setup a long hose to the back, but it could be done.

[neo71665]

Interested in the outcome of the caps.