[79transam man]

I have a 79 T/A with a 403 that i will be replacing with a pontiac 400 what would be the best way to build up the 400 it will a some what of a daily driver. I want to bore it .30 or .60. I want to get at least 450HP out of it.

 

[HemmiGremmie]

Aftermarket heads, good ignition, headers, 10-1` or so comp and a nice wallet. HG

 

[Toy71Camaro]

a nice wallet. HG

I second that


My dad just built a 450 HP 350sbc, put about $3k into it, did all the work himself (except any machining).

 

[79transam man]

what about boring it? I was going to go for .30 or .60 which one is better of the two for a mid daily driver?

 

[Toy71Camaro]

Mid daily driver, i would think the 30 over would be better.

But someone else with more experience may be able to give you a better idea.

 

[79transam man]

thats what i was thinking, Know what is the best side to find info on what parts to get and such

 

[Super Chevy]

u wont get any noticeable performance from boring an engine out, the only purpose of it is to clean the cylinder walls up, an ideal situation is if u only have to have them honed, the cylinder walls are left thicker and stronger.

 

[Lonestar]

what about boring it? I was going to go for .30 or .60 which one is better of the two for a mid daily driver?

You need to get the cylinders of your block measured with a micrometer. When you know what the current size of the cylinders are, you then bore them out to the next size available piston, unless they are still within specs for a standard size. If they are in standard range, you need them honed for new rings.

Boring is done only for one purpose...to straighten the cylinders out for new pistons.

Never bore a block out any more than is needed to fit new pistons to.

 

[79transam man]

thanks for the info, what about doing a stroke for it is there a package kit for stroking it?

 

[Odium]

Wuzzup man I have the same car. I decided to go with a 400 chevy motor instead of a Pontiac because of parts availability and ease of modification. You can use all sbc parts as they interchange and you get great TQ over a 350. If you're looking at buying a Pontiac 400 make sure you at least get the 6X casting heads.

 

[jimfulco]

http://chiefmanyhorses.com/pages/new_products.htm and check out their catalog for other Pontiac stuff

www.pontiacstreetperformance.com has lots of good Pontiac info, also

http://www.amazon.com/exec/obidos/tg/detail/-/1884089674/104-5049204-6655113?v=glance is Jim Hand's new book on Pontiac engines

 

[Lonestar]

thanks for the info, what about doing a stroke for it is there a package kit for stroking it?

Your welcome.

To increase stroke you need a new crank with a longer throw.

Look at the chiefmanyhorses site, you should find what you need.

 

[79transam man]

Wuzzup man I have the same car. I decided to go with a 400 chevy motor instead of a Pontiac because of parts availability and ease of modification. You can use all sbc parts as they interchange and you get great TQ over a 350. If you're looking at buying a Pontiac 400 make sure you at least get the 6X casting heads.

You put a chevy 400 in a trans am how did that work what did you have to fab it up as far as motor mounts

 

[Odium]

You put a chevy 400 in a trans am how did that work what did you have to fab it up as far as motor mounts

It worked out great. The Camaro and Firebird are the same body and frame so the chevy small block motor mounts out of a Camaro will work. I never tried puting the shaker hood back on as I found an L-88 glass hood so you may have to look into how that would go back on. I also put a TH-400 trans in instead of the stock TH-350 so I'm not sure if the bellhousing is the same for a Pontiac and Chevy motor as I ordered the trans to mount the the sbc 400.

Forgot to mention, I changed out the stock exhaust manifolds for chevy small block headers as the Pontaic manifolds wouldn't fit the chevy heads.

 

[Lonestar]

The bell housings are not the same.

 

[Lonestar]

I have a 79 T/A with a 403 that i will be replacing with a pontiac 400 what would be the best way to build up the 400 it will a some what of a daily driver. I want to bore it .30 or .60. I want to get at least 450HP out of it.

Just what exactly is a Qucik?

 

[Ghetto Jet]

what about boring it? I was going to go for .30 or .60 which one is better of the two for a mid daily driver?

Only go .030, there is no benefit to boring .060

 

[79transam man]

Re: Re: Hey Got A Qucik?

Just what exactly is a Qucik?

\its called typing to fast lol. OK what i decided to do is stick with the 403 for a little bit but i do what do get some performance out of it so i looked into getting some diffrent heads and i found that the 72 350 7A heads are good but i have to drill the bolt holes 17/32 i think is there anything elise id have to do to make them fit?

 

[79transam man]

so know one knows what i need to do to get those heads to fit?