FART_NUGGETS

Was looking at these heads for a possible budget head/cam swap, but they use the straight center intake bolts from 1986 and earlier.

Can my 1989 base be modified (drilled) to work with the straight center bolt holes, or do I need to budget for a new lower intake as well?

Here are the heads:

https://www.summitracing.com/parts/wrl-042650

midias

Yes it can be re drilled.

FART_NUGGETS

Cool, anything special need to be done so the bolt head will sit flush?

Tuned Performance

iTrader: (92)

The bolts might not sit flush without a bushing. There are a few styles.
https://www.carid.com/professional-p...mpn-52110.html
You might consider a higher flowing base for performance the stock base is restrictive.
https://images.search.yahoo.com/imag...sigt=11l02tvvu

blinky22

I am going to be doing this in the next few days. was wondering dose any one have any photos of the holes drilled out and realigned


Thank you


Blinky

91rs1022

iTrader: (3)

I have a 86 TPI intake I’d swap for a 89 TPI intake.

Tuned Performance

iTrader: (92)

This is a aftermarket base but same concept.

blinky22

I did mine today I used a die grinder to contour the top flat and a mini die grinder to extend the holes both using non ferrous carbide burs.
I was thinking about welding up the un used part of the holes but I think it should be fine seeing as the after market ones are slots also.


Blinky

FART_NUGGETS

Thanks guys. Still no idea what I will ultimately do here, now Im thinking going with some Vortec heads and a matching TPI base. Maybe I should just leave it alone until it blows up......