Thread: 283 w/2 sp glide

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there has been alot of talk on here about boring it 60 over. correct me if i'm wrong but if that is done havent you just ruined any future rebuids for that motor because you have already bored it out to the max, and your left with a paper weight.

not neccessarily....most 283's will handle a .120 in overbore...corse you should sonic test your block first....

I looked in Jegs the vortec's can be had for $500.00 for the pair complete...add $100.00 for intake...

total rebuilding your heads with hardened seats may run you more than that....

with the Vortec's you have slightly more compression and better cylinder and combustion efficiency....that means more power and better mpg doing it.... most cost efficient!

Originally posted by dr_bowtie
the 882 heads have 76cc chambers and will lower your compression compared to the factory heads you have....

I agree with dr_bowtie.Even though the 882 heads have bigger valves ,it is not a good trade-off. Besides with the combination you have bigger valves is not a plus. You can certainly use your stock manifolds,but if You dont have dual exhaust that is where I would start.I wouldn't put any bigger than 2&1/4 pipes back through the mufflers. If you're on a tight budget i would buy Summit !4.95 turbo mufflers. They work pretty well. I would Try to do my cam ,lifters,timing chain and gear set, intake and carburator all at the same time. Make sure the used carburator is good before you go wasting your money.

might try to find a set of larger ram horn manifolds at a swap meet. Would help the motor breath bette. You are definitely headed in the right direction. you can take the 283 out .120 and get 301 cubic inches.

What do you guys think of the torquer 305 heads from world products?summit has them for $380 a pair assembled part #WRL-042650-1 is for smaller displacement engines.I can't beat that price for any kind of rebuild on my stock heads.

Originally posted by 67 caprice
What do you guys think of the torquer 305 heads from world products?summit has them for $380 a pair assembled part #WRL-042650-1 is for smaller displacement engines.I can't beat that price for any kind of rebuild on my stock heads.

I hate to tell you,But that price is too good to be true. Turn to page 133 and look again.The part# you listed sells for 759.00 a pair. With what you are talking about doing 2.02/1.60 valves are too big for what you have.
Part#wrl-043610-1 might work better but they also cost 759.00

Thanks for the heads -up.I must have been looking at the wrong part # on the web site.The page I was looking at referred to a set of heads then gave a price.I have since found a price for each head at jegs for $365 ea..So the $380 from summit was for 1 head.They look good but I don't want to spend that much.It's not that I won't have the money ,It's a matter of spending to much on the overall project.I don't want to sacrifice quality either.It looks like used GM products are the way to go.

Dr.Bowtie do you have a pert # or#'s for the 305 heads so I can look for a piar at the next swap meet?I looked at the vortec heads,are they a stock chevy item?If so what is a good part # for my engine..BTW I greatly appreciate everyones responses and comments.This is a good fourm,thanks!!!

I got this offof mor-tec's site . All the answers to my questions....If you are thinking about rebuilding a set of old "camelhump" heads or using a set of 1960's or 70's vintage cast iron production heads, check this out first. The '96 and later smallblock "Vortec" 350 cast iron heads are a very hot item. These "L31" heads with casting number 10239906 and 12558062 or PN-12529093 (bare), flow great numbers for a production head, even better than the Phase 2 Bowtie cast iron head, when fitted with 2.02/1.60" valves and bowl ported. The complete heads (PN-12558060) come with 1.94"/1.5" valves and pressed in rocker studs, but can easily be fitted with 2.02"/1.6" valves and screw in studs. Chamber volumes are 64cc and intake port volumes are 170cc. The Vortec heads have raised intake ports and "fast burn" chambers. The heads require the use of narrow body "self-aligning" rocker arms and center bolt valve covers. They will bolt to any Gen.1 block.

The price per pair for new complete Vortec "L31" 350 SBC heads (PN-12558060) is about $485.00 (as of 11/1/03), with 1.94"/1.5" valves, springs and retainers from GM/Performance Parts. You can then use the valve sizes you want to use and drill and tap for screw in studs. However, the intake manifold bolt holes are in different locations than previous Gen.1 heads. Only four intake bolts are used on each side to fit the "Vortec" style intake, instead of the usual six on each side. The correct Vortec intake manifold bolts are found under PN-12550027. Use Vortec intake gasket PN-12529094. The stock Vortec L31 valve springs are good for lifts up to .475"-.480" maximum. If you use a cam with more lift you'll need to change the springs and have the valve guides machined down to clear seals and retainers.

You can try to redrill and tap the heads to fit the older style Gen.1 intakes, but why bother. Edelbrock has aluminum two and four barrel "Vortec" style intakes out that have the correct bolt hole positions. Edelbrock PN-7116 is their "Performer RPM", dual plane, high rise intake for the "Vortec" heads, while Edelbrock PN-2116 is their "Performer" street dual plane for 4-barrels. They also have two "Vortec" versions of the new "Super Victor" aluminum, high rise, open plenum race manifolds. PN-2912 is for 2-barrel restricted class racers and PN-2913 fits a 4-barrel intake to the "Vortec" RPO "L-31" heads. Vortec style intakes are also available for TBI and TPI setups.

GM/Performance Parts has a dual plane aluminum four barrel intake that is PN-12366573 and fits the unique Vortec intake manifold bolt pattern. GM also has a aluminum open plenum high rise (PN-12496822) intake for the Vortec L31 heads.

I'm still going to look into the 305 heads

why not get an old set of camel humps 1.94 1.6 and if u want hog em out to 2.02 1.6....scooter