3100 to 3400 question

[CodeRed]

well i lost a auction for a 3400 but a friend said he can get me a 3100 with a blown headgasket for cheap what would i need to make a 3100 into a 3400 ?

is it like the difference between a 2.8 and 3.1 the crank and rods?

[Hemet8]

3400-3100

I have the 3400 at a bore of 3.62in, with a stoke of 3.30in. I'm not 100% on these, thats just what i have in a spec manual for the '05 grand am engine. I was also thinking that the 3100 is a 3.50-3.51 bore and a 3.30-3.31 stroke. they are basicly the same dimension wise, the 3400 is the "stroker" version. I have seen the 3100 with the high flow heads make 170hp, 185lb ft. of torque, the same set-up on the 3400 yeilds 175hp, 205lb ft. of torque. More stroke=more torque.

[bszopi]

RE: 3400-3100

3400 and 3100 share the same stroke. 3400 has a different block (more metal) allowing for the larger bore size. Although it is possible to bore a 3100 to a 3400, it isn't recommended at all. I can't remember right off the difference, but I think you'd have to overbore the 3100 0.120" to get up to a 3400. You wouldn't want to really push that powerwise without sonic tests and such of the block.

[GP1138]

If nothing else, you can do the 3100/3400 intake swap. I've got that on my car right now. It's fairly time-consuming, but it was worth it to me.

[CodeRed]

i was considering doing just a hybrid swap which is possible course not like i`m driving the car right now anyways since i do have my truck hehe

[GP1138]

i was considering doing just a hybrid swap which is possible course not like i`m driving the car right now anyways since i do have my truck hehe

Well, if you need help, or don't mind it, I'd love to help, since we're like a 15 minute drive.

[CodeRed]

yup i remember talking to u didnt u come by my old work when i worked at bestbuy?

[GP1138]

yup i remember talking to u didnt u come by my old work when i worked at bestbuy?

Yup, sure did.

[CodeRed]

i'm just waitign for my friend to get back with me on that 3100 or i could just wait since there are "supposedly"some 3400s in a yard in springfield for 550

[project60degree]

is there a difference in the 3400 and 3100 heads if so what are they...also with the intakes

[Guest]

is there a difference in the 3400 and 3100 heads if so what are they...also with the intakes

Best answer here is, YES. Between different years there are differences. But in some years they are the same.

[project60degree]

what year are they different and what is the difference?

[bszopi]

http://www.60degreev6.com/modules.php?op=modload&name=Pushrod&file=index&req=viewarticle&artid=32&page=1